The biggest threat to this country comes from the Politicians who are willing to do anything to stay in power and keep their wealth. Politicians who take in 100's of thousands of immigrants (without any criminal background investigation) and give them citizenship, and a card that says, VOTE DEMOCRATIC PARTY TICKET (or else).
Politicians who hire illegal aliens because they think they are above the law.
Politicians who spit on police, politicians who allow the military to be cut, allow the murder of preborns, don't mind the elderly being killed as long as organs can be harvested and they can get richer.
ENFORCE THE LAWS we already have, and get RID OF THE CRIMINALS in our political system, and then most other things will take care of themselves.