I think it's great that there is a bill out there. Unfortunately it offers nothing to motivate Republicans politically, hence doing something like increasing the ability to offer due process and humane conditions. If a Republican breaks with Trump he or she needs something to show their constituents, in this case a functioning and competent process.
Will Dems allow the building of detention facilities provided they are humane, leave families whole and fund sufficient personel to give due process in short order? I'm not talking years or many months, but say 90 days, hopefully less?
Would they compromise to end cruelty? I'm not saying that Republicans would be responsive, but just how many would be needed to make this happen? I don't think too many.