Trump doesn't have a problem using illegal immigrant labor. As Marco Rubio said in a debate, google Donald Trump and Polish workers.
Either way there's going to be a logistics issue. Mass deportation sounds okay in theory but it's obviously incredibly tough to implement in reality and there's a lack of resources to make it effective. And using local budget resources to keep illegals locked up here quickly gets dicey as well. Either way, I'm pretty sure that the answer isn't to release him back to the public and refuse to comply with ICE, as Portland officials did here.