Processing/ verification that each individual qualifies for political asylum, as we're told that's what the migrants will claim in order to enter the US. Maintaining order/ preventing entry to US until processing and verification of asylum status is granted, and provide security until such time. Nothing Orwellian about enforcing law and order unless you want to argue the current laws regarding immigration are Orwellian, in which case you should work to repeal or change the laws, instead of beating up on Trump and his supporters for enforcement of current law. Feel free to literally and specifically describe what "violently repels" entails.