They are being targeted for breaking into another country illegally. I'll never understand anyone who thinks it's OK to welcome anyone who's first act in the US is committing a federal crime by breaking in.
Besides, there are also fully legal immigrants being deported.
This, along with bullish economic policies to get them to capitulate to demands of US-homed multinationals (along with plenty of their own internal problems like everywhere else), has caused a problem that has now come home to roost.
It wasn't their fault, they were just born in the wrong country. If they can make it here to work and build a better life for themselves, great. Pay taxes. Get ID'd. Done.
Papiere bitte
This is how a free country turns slowly into a place where you need to carry a passport to take out the garbage bin in the morning.