"...intended to detain non-citizens slated for deportation."Your statement raises two distinct questions:
Q1) Why are these individuals being detained? Are they visitors to the United States, with a valid visa, merely subject to detention by a bigoted law enforcement agency...or are have they broken one or more existing U.S. laws by overstaying their visa or illegally entering the country?
If the former, then yes, it is shameful and should be addressed immediately.
If the latter, then they are being detained as any anyone would be if they had been accused of a crime and considered a flight risk.
Q2) How are they being detained? Are the conditions considered acceptable by third-party organizations such as the ICRC? Are detainees being provided with adequate food, water, shelter, and medical care? Is there an official timetable for the resolution of their detention? Are the reason(s) for their detention documented and available to advocates?
If any of the above questions have a "no" answer, then again it is shameful and should be corrected immediately.
Beyond that, the United States is not conducting itself in a manner inconsistent with most other nations in the world.
As for Trump and the mythical "rounding up" plans: just stop it.
Seriously.
This kind of hysterical fearmongering is just as absurd as Glenn Beck's "Obama's gonna round up conservatives and put them into FEMA camps" bullshit from a couple of years ago. It is just as unsubstantiated, just as inflammatory, and just as likely to be fought tooth and nail by average Americans.
Any social advocate will tell you that this ain't the 1940s.