Before terrorists it was drugs, before that it was communists, before that it was communists with less weed and shorter hair.

Eventually you realize your enemy isn't the system. The system is like a misbehaving toddler that's never been disciplined. It acts as badly as it can get away with. Your enemy is your fellow countryman, you coworkers, your own family. And from that realization comes nothing actionable nor good conclusions, only despair...

why not legally migrate, millions have done it in the past.

In reality, CBP and ICE have very little power.

ICE has very little legal authority and is yet the current president’s ground troops to lock up everyone who looks foreign. I’d say they have all the power they need.

ICE can walk into your house / pull you out of the car with masks on and kidnap you without showing you any papers. That's more power than a lot of other agencies