What Trump actually said was we need to tighten gun purchases. But he's smart enough to know we already have WAY more than enough restrictions in place, and the issue is in fact enforcing the ones that ALREADY EXIST.
It's like when a carjacking happens, and people say we need *more laws* to prevent this from happening.
They actually say that. No, dumb sh*ts. The laws against homicide, endangerment, and grand theft are ALREADY THERE, and more laws are not the solution there either.