Trump politicizes everything and doesn’t care about laws – he just wants to punish people. He wants to send detainees to areas (sanctuary cities) held by Democrats (mayors or Congress) who oppose his terrible immigration ideas. Even his own employees raised legal objections but Trump still wants to do it. Sad!
This follows the reduction of tax deductions for SALT which penalized blue states, his threats to withhold money aimed for California and unwillingness to support the Gateway tunnel that would help New York and New Jersey. He has no interest in being president for everyone – he only cares about his base.