It's as stupid as algorithm export bans. Supply of anything is rarely hampered for long provided sufficient demand. However, given a vacuum of good ideas invented by a certain political party, that party will happily supply bad ones. Should the other side manage to come up with something better, of course they'll make sure they encounter roadblocks.
Spoken another way. Conservatives seem to like to keep with the tradition of attacking supply. Liberals try to attack the demand. Since the latter came from the liberals it of course is socialism and therefore evil. It's unclear how successful tackling demand would be, but hitting supply is good for the MIC and prison industry even if it has a clear historical demonstration of failing to solve the original problem.