Currently our broken existing US Immigration Law allows illegals to illegally hop a border fence, run up to a US BPA, surrender, have a court hearing that gives them a court date for a time in the future, and then they are released 'on parole' into the US populace to disappear. -- That's like catching a burglar breaking into your house, the cops take him in, they set a trial for some time in the future, then release him, trusting him to come back for his trial. The Supreme Court's ruling provides some sanity to what our Immigration Policy SHOULD be - Catch and DEPORT instead of Catch and RELEASE. The decision specifically states: "In Nielsen v. Preap, #SCOTUS holds that law instructing DHS to take noncitizens convicted of some crimes into custody and hold them until deportation proceedings does not mean noncitizen is exempt from mandatory detention if not picked up immediately after release from prison — SCOTUSblog (@SCOTUSblog) March 19, 2019" "In other words, the Department of Homeland Security has the legal authority to detain illegal immigrants after they have been through a court hearing. This helps to address the ongoing catch-and-release policies that have been mandated by Congress' refusal to change outdated immigration laws." . Supreme Court: Yes, Criminal Aliens Can Be Detained After a Court Hearing .