Eighteen members of the United States Congress this week wrote a letter to President Obama asking him to reclassify Cannabis from a Schedule I drug to a lower level which would allow medical uses. The current DEA classification means that, in the eyes of the federal government, there’s no legitimate use for marijuana. Even cocaine and meth have limited medical legitimacy.

“Closed-door interactions.” That’s what the American Political Science Association (APSA) has recommended as one way to tackle congressional inaction. An APSA task force suggests that less transparency in government has clear and actionable benefits which can bolster the ability of Congress to resolve difficult policy issues.

One of the benefits sold by former U.S. President Bill Clinton to approve the North American Free Trade Agreement (NAFTA) in 1993 was that the agreement would reduce illegal immigration substantially. Twenty years after it was enacted, experts mostly do not agree on the particular effect NAFTA has on immigration.

Using the numbers to analyze it, the results are confusing. For years after the bill, the number of undocumented Mexicans in the United States skyrocketed from 2.5 million in 1995 to 11 million in 2005.