They act shocked because they don't genuinely care about people being deported, families being ripped apart, providing support for displaced people, or just in general not displacing people in the first place with wars and disastrous economic manipulations half way across the world.

They are only paid to care about it or even be aware of it if it suits the needs of their designated group of oligarchs.

FYI, on the campaign trail, Trump cited the 30million+ number of illegal immigrants (a number advocated by Ann Coulter). Official US government numbers settled somewhere near 11 million (largely based on census numbers, so likely underreported).

Coulter citation:

https://twitter.com/AnnCoulter/status/771162318994563072

This was something he let go of because it wasn't popular. I've watched many of his rallies and don't recall hearing this line. A few of his lines were so unpopular he let them go.