That existing US laws, and provisions regulating immigrants and illegal immigrants are a joke is understood. Under previous administrations - which incl. Trump, and the present administration. Trump didn't even manage to finish building a lousy wall in 4 years. Nor did he introduce/pass any immigration bills - in regards to handling illegal immigrants.
Trump entered the White House promising a southern border wall to stop illegal crossings and saying he’d work with Congress to pass laws to crack down on illegal immigration. Trump failed to complete a border wall, though he did achieve funding for some of it. And Congress failed to pass any immigration bills even when Republicans controlled both chambers.
Your Trump didn't do shit - aside from keeping all issues unresolved - so that he could use the same "promises" and loudmouth speeches onto the existing discontent amongst Americans, for the next election.