Where do you live? Does your military enforce your laws? They CAN'T do that here because the Constitution doesn't allow it unless certain conditions are met.
In a country of this size, it would be impossible to do a sweep of all houses, apartments, garages, storage units, garbage containers, cars, etc- even with a military of the size of ours, it could never be done in a way that's effective, comprehensive or successful. They could shut down small cities and large chunks of bigger ones and prevent anyone leaving (except when someone has a good reason to leave) but it will never happen.
You think the government should have absolute power to search people and buildings?
This country is out of control because we have too many people with mental illness, bad brains and bad up-bringing. Then, there are the problems in the general population.