I don't want to automatically blame Trump, but if the leader of the country ignores laws, why would anyone else think they are that important?
ICE is the President's personal force, screened for their loyalty to him. They have no interest in the law. The rest of the government doesn't like them any better than you do.
The president has always ignored the law.
Like I said, people only cry foul when its not 'their guy' disregarding the law and constitution. America has always been like this, and its only getting worse as both sides become more neurotic.
So it's not all Trump, but his administration has definitely pushed the lack of accountability to new heights and combining it with the new wave of surveillance tech with limited oversight or legislation it's all just become ingrained with nobody to fight it.