I doubt the courts would be respected even if they ruled against it. Trump is currently ignoring the courts to have people illegally kidnapped and deported to foreign prisons, with no due process, some of them to be enslaved there for life:

https://www.pbs.org/newshour/world/what-to-know-about-the-el-salvador-mega-prison-where-trump-sent-hundreds-of-immigrants

From that article:

CECOT prisoners do not receive visits and are never allowed outdoors. The prison does not offer workshops or educational programs to prepare them to return to society after their sentences. ... Bukele’s justice minister has said that those held at CECOT would never return to their communities.

The Trump administration has not identified the migrants deported, provided any evidence they are in fact members of Tren de Aragua or that they committed any crimes in the U.S.

That'll teach them. The supreme court might even write a strongly worded letter!