Keep bad people out

It would be nice if we could stop bad people from coming into our country and killing us. Our government has proven it is incapable of doing that. If you can't filter out the poison that's in the water than it's a good idea not to drink any of the water. Until our government shows it is capable of keeping the bad guys out then maybe it's a good idea to keep all of them out. On this point it seems Trump is correct and rather than dump on him wouldn't it be better for our government to solve the problem. By saying he would ban all Muslims he is pointing a glaring finger at the failure of our government to protect us. Am I the only one to see this?