The background and pro and con arguments were written by ProCon.org staff based upon input from the following footnotes (directly referenced) and sources (used for general research and not directly referenced):
Footnotes:

  1. Alan Pyke, "Marijuana's $2.4 Billion Impact in Colorado Is a Lesson for 5 States Considering Legalization," thinkprogress.org, Oct. 28, 2016

  2. Troy Antonuci, "The Economics of Legalization," Daily Marijuana Observer, Apr. 6, 2017

  3. Lauren Dixon, "How Growing Marijuana Legalization Could Affect the Economy," talenteconomy.io, Dec. 20, 2016

  4. RCG Economics and Marijuana Policy Group, "Nevada Adult-Use Marijuana: Economic & Fiscal Benefits Analysis," rcg1.com, July 2016

  5. Patrick McGreevy, "Legal Marijuana Could Be a $5-Billion Boon to California's Economy," latimes.com, June 11, 2017

  6. University of California Agricultural Issues Center, "Economic Costs and Benefits of Proposed Regulations for the Implementation of the Medical Cannabis Regulation and Safety Act (MCRSA)," dof.ca.gov, Feb. 23, 2017

  7. Alicia Wallace, "Report: America's Marijuana Industry Headed for $24 Billion by 2025," thecannabist.co, Feb. 22, 2017

  8. Jay Barmann, "80 Percent of Medical Marijuana Tested at Recent NorCal Conference Is Tainted with Mold, Other Toxins," sfist.com, Aug. 31, 2017

  9. Lisa M. Krieger, "A Flower's Long Journey: How Legal Weed Goes from Seed to Sale," thecannabist.co, June 20, 2017

  10. American Public Health Association (APHA), "Regulating Commercially Legalized Marijuana as a Public Health Priority," Nov. 18, 2014

  11. Washington State Legislature, "WAC 314-55-105: Packaging and Labeling Requirements," apps.leg.wa.gov (accessed Jan. 8, 2018)

  12. George Sam Wang, et al., "Unintentional Pediatric Exposures to Marijuana in Colorado, 2009-2015," JAMA Pediatrics, Sep. 6, 2016

  13. Bureau of Cannabis Control, "Medicinal and Adult-Use Cannabis Regulation," bcc.ca.gov (accessed Jan. 8, 2017)

  14. Brooke Staggs, "Here Are the Rules for Legal Marijuana in California Once Law Goes into Effect Jan. 1," ocregister.com, Nov. 16, 2017

  15. Marijuana Policy Group, "The Economic Impact of Marijuana Legalization in Colorado," mjpolicygroup.com, Oct. 2016

  16. Christopher Ingraham, "The Marijuana Industry Created More Than 18,000 New Jobs in Colorado Last Year," washingtonpost.com, Oct. 27, 2016

  17. United States Border Patrol, "Sector Profile - Fiscal Year 2015 (Oct. 1st through Sept. 30th)," cbp.gov (accessed Jan. 8, 2018)

  18. Christopher Ingraham, "Legal Marijuana Is Finally Doing What the Drug War Couldn't," washingtonpost.com, Mar. 3, 2016

  19. John Burnett, "Legal Pot in the U.S. May Be Undercutting Mexican Marijuana," npr.org, Dec. 1, 2014

  20. Earl Blumenauer, "The Path Forward: Rethinking Federal Policy on Marijuana,"blumenauer.house.gov, 2017-2018

  21. American Civil Liberties Union (ACLU), "The War on Marijuana in Black and White," aclu.org, June 2013

  22. Christopher Ingraham, "Justin Trudeau May Have Made the Best Case for Legal Pot Ever," washingtonpost.com, June 10, 2016

  23. Michele Baggio, Alberto Chong, and Sungoh Kwon, "Helping Settle the Marijuana and Alcohol Debate: Evidence from Scanner Data," ssrn.com, Dec. 11, 2017

  24. Jesse Wegman, "The Injustice of Marijuana Arrests," nytimes.com, July 28, 2014

  25. Drug Policy Alliance, "Drug War Statistics," drugpolicy.org (accessed Jan. 8, 2018)

  26. American Civil Liberties Union (ACLU), "California: Marijuana Infractions Unfairly Enforced Against People of Color," aclunc.org, May 31, 2016

  27. Brendan Cheney, "For Non-White New Yorkers, Marijuana Arrests More Often Lead to Conviction," politico.com, May 9, 2017

  28. German Lopez, "Everyone Does Drugs, but Only Minorities Are Punished for It," vox.com, July 1, 2014

  29. D. Mark Anderson and Daniel I. Rees, "The Legalization of Recreational Marijuana: How Likely Is the Worst-Case Scenario?," ist.psu.edu (accessed Jan. 8, 2018)

  30. University of California, Irvine, The Paul Merage School of Business, "Closing Medical Marijuana Dispensaries Increases Crime, According to New Study," sciencedaily.com, July 11, 2017

  31. Melissa Santos, "What Actually Happened to Violent Crime after Washington Legalized Marijuana," thenewstribune.com, July 26, 2017

  32. National Council on Alcoholism and Drug Dependence, "Alcohol, Drugs and Crime," ncadd.org, June 27, 2015

  33. Jonathan P. Caulkins, Beau Kilmer, and Mark A.R. Kleiman, Marijuana Legalization: What Everyone Needs to Know, 2016

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  35. Ruth Graham, "Is Marijuana Good for Public Health?," daily.jstor.org, Oct. 8, 2014

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  38. Jim Dryden, "As More States Legalize Marijuana, Adolescents' Problems with Pot Decline," wustl.edu, May 24, 2016

  39. Substance Abuse and Mental Health Services Administration, "National Survey on Drug Use and Health: Comparison of 2013-2014 and 2014-2015 Population Percentages," samhsa.gov (accessed Jan. 8, 2018)

  40. Christopher Ingraham, "After Legalization, Teen Marijuana Use Drops Sharply in Colorado," washingtonpost.com, Dec. 21, 2016

  41. Justin Gardner, "CDC Study Shows Pot Legalization Dramatically Decreases Drug Use," mintpressnews.com, Sep. 8, 2016

  42. Marijuana Policy Project, "Teen Marijuana Use Does Not Increase Following Marijuana Policy Reforms," mpp.org (accessed Feb. 5, 2018)

  43. MaristPoll, "Yahoo News/Marist Poll: Weed & The American Family," marist.edu, Apr. 17, 2017

  44. David L. Nathan, "Why Marijuana Should Be Legal for Adults," cnn.com, Jan. 9, 2013

  45. Centers for Disease Control and Prevention, "Alcohol Poisoning Deaths," cdc.gov, Jan. 2015

  46. Drug Enforcement Administration, "Drug Fact Sheet: Marijuana," dea.gov (accessed Jan. 8, 2018)

  47. Nick Wing, "No, We Didn't Just See the First Marijuana Overdose Death," huffingtonpost.com, Nov. 17, 2017

  48. David Nutt, Leslie King, and Lawrence Phillips, "Drug Harms in the UK: A Multicriteria Decision Analysis," The Lancet, Nov. 1, 2010

  49. Drug Policy Alliance, "So Far, So Good What We Know about Marijuana Legalization in Colorado, Washington, Alaska, Oregon and Washington, D.C.," drugpolicy.org, 2016

  50. Debra Borchardt, "$1 Billion in Marijuana Taxes Is Addictive to State Governors," forbes.com, Apr. 11, 2017

  51. Larson Silbaugh, "Distribution of Marijuana Tax Revenue," colorado.gov, July 2016

  52. Jennifer Calfas, "How Colorado's Booming Marijuana Industry Is Helping Fight Homelessness and Drug Addiction," time.com, June 1, 2017

  53. CBS News, "Tax Revenue from Colorado Pot Helps Fund Community Projects, Scholarships," cbsnews.com, Apr. 20, 2017

  54. Bruce Barcott and Gage Peake, "Part 2, How Many Jobs Depend on Legal Cannabis?," leafly.com, Jan. 5, 2017

  55. Debra Borchardt, "Marijuana Industry Projected to Create More Jobs Than Manufacturing by 2020," forbes.com, Feb. 22, 2017

  56. New Frontier Data, "The Cannabis Industry Annual Report: 2017 Legal Marijuana Outlook," newfrontierdata.com, 2017

  57. Melia Robinson, "Legal Marijuana Could Overtake Manufacturing in Job Creation by 2020," businessinsider.com, Mar. 3, 2017

  58. United States Department of Labor, "Projections of Industry Employment, 2014–24," bls.gov, Dec. 2015

  59. Daniel Wheaton, "Legal Weed Could Generate More Than 100,000 Jobs," sandiegotribune.com, Nov. 1, 2016

  60. Jeffrey A. Miron, "The Budgetary Implications of Drug Prohibition," harvard.edu, Feb. 2010

  61. David G. Evans, "The Economic Impacts of Marijuana Legalization," wrlc.org, Dec. 30, 2013

  62. Stephen Downing, "Drug War: What Prohibition Costs Us [Blowback]," latimes.com, Oct. 6, 2011

  63. Katherine Beckett and Steve Herbert, "The Consequences and Costs of Marijuana Prohibition," washington.edu (accessed Jan. 8, 2018)

  64. American Civil Liberties Union (ACLU), "Court Filings for Adult Marijuana Possession Plummet," aclu-wa.org, Mar. 19, 2014

  65. Ronnie Cohen, "After States Legalized Medical Marijuana, Traffic Deaths Fell," reuters.com, Dec. 28, 2016

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  67. Justin McCarthy, "Record-High Support for Legalizing Marijuana Use in U.S.," gallup.com, Oct. 25, 2017

  68. Jennifer De Pinto, et al., "Marijuana Legalization Support at All-Time High," cbsnews.com, Apr. 20, 2017

  69. Christopher Ingraham, "How Many Americans Regularly Use Pot? The Number Is, Errr, Higher Than You Think," sacbee.com, Apr. 20, 2017

  70. Drew Desilver, "Feds May Be Rethinking the Drug War, but States Have Been Leading the Way," pewresearch.org, Apr. 2, 2014

  71. Brian Heuberger, "Despite Claims, Data Show Legalized Marijuana Has Not Increased Crime Rates," coloradopolitics.com, Mar. 22, 2017

  72. David Boaz, "Drug Legalization and the Right to Control Your Body," cato.org, Oct. 25, 2007

  73. Josh Hamilton, "The Economic and Social Benefits of Taxing Marijuana," medium.com, Sep. 26, 2017

  74. NORML, "Marijuana and Psychomotor Impairment," norml.org (accessed Feb. 5, 2018)

  75. Desirae Hoover, "4 Reasons Why Legalizing Marijuana Could Be the Solution to America's Problems," huffingtonpost.com, Sep. 6, 201

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  82. Christopher Ingraham, "More People Were Arrested Last Year over Pot Than for Murder, Rape, Aggravated Assault and Robbery — Combined," washingtonpost.com, Sep. 26, 2017

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