But how do you remove guns obtained illegally? How do you combat criminals with guns? You can't keep tabs on criminals with closed cases. You can't check their residences without cause, and cause calls for proper evidence, which can't be obtained without a warrant, and a warrant can't be called into place, again, without proper cause. What you're saying is to eliminate guns from innocent people, putting them at risk. Do you really think a criminal is going to pay attention to a sign that says "firearms prohibited?" Did it work for drugs? You're logic is flawed. The places that have the highest gun crime are the places with the strictest gun laws. There's an obvious, undeniable connection, here. So please, explain how removing guns from the general populous is a good idea.