How about using some of that virtuous compassion to get the democrats to fund more dollars for detention facilities and immigration judges, so that hearings can be processed in greater volumes.

The security bill that was supported by Democrats at during the Biden Administration contained exactly that.

BTW, don't bring up the vacuous border bill offered in the twilight of Biden's Open Border administration.

Oops.

Trump would be glad to lock them up while wait if he had the funding.

But he doesn't. U.S. detention facilities only have a capacity of about 43K-45K, and that's almost entirely full already. And the Administration has been frustrated at their inability to arrest more people faster - they just don't have the manpower to do it, now that they burned through all the cases where the work had mostly been done. There was a modest bump in funding for both those things in the CR, but not enough to materially affect the process - especially since there wasn't any real increase in the funding for immigration courts. Since the throughput at the end of the arrest-detention-court-deportation process is still being bottlenecked by the courts, it's not going to go any faster.

That's probably one reason why the Administration is willing to "disappear" people through extra-judicial means. Giving people due process and a chance to contest the allegations in front of a neutral party takes time and resources, and they are unwilling to devote either.