According to the US Dept of Justice, table 9, 53% of prisoners in state prisons were there for violent offenses, 16.8% for drug offenses. There is may be more turnover with the drug offenses.
http://www.bjs.gov/content/pub/pdf/p12ac.pdf
There are about 12% as many federal as state prisoners sentenced.
And there are about a third as many people in jail as in federal or state prison. The violent offense rate is lower there, the drug offense higher than state prison.
I’m for ending the war on drugs at least part way - legalize marijuana and opium products, yes, meth no, cocaine, not sure.
But Rand Paul is annoying me - he is smart and has potential - he is clueless on immigration and now he screws up basic statistics - did he let someone feed him those bogus numbers?