Marijuana is illegal for any reason under federal law, but states have boldly experimented with allowing its use anyway, starting with California 20 years ago.
Some states have made the drug legal for medical purposes; others have removed jail sentences for carrying small amounts; and some let adults 21 and older use it for any reason.
When was the last time you opened your laptop mid-conversation or brought your desktop computer to the dinner table? Ridiculous, right? But if you are like a large number of Americans, you have done both with your smartphone.
