“U.S. immigration policy, like its drug policy, has been unforgiving of drug dealers and drug users for a long time. Laws passed in the 1980s and 1990s, at the height of the War on Drugs, dictate that any drug offense (other than a single conviction for possessing a small amount of marijuana) is a deportable offense, even for a lawful permanent resident. Any drug sale or potential sale, no matter how small, is considered an “aggravated felony.” In such cases, the judge must order deportation. The judge has no leeway to consider the immigrant’s personal life or the circumstances of the crime. Even convictions that are pardoned or expunged at the state level can still count as convictions under immigration law at the federal level.”