At least Trump's cuckoo policies have little chance of passing through Congress, right? NOPE. Turns out he doesn't need stupid Congress to fund his amazing wall or kick people out of the country! Most of the tools are already in the presidential toolbox.
"The International Emergency Economic Powers Act gives the president the authority to declare that something or someone of international origin poses a significant threat to the safety or economy of the United States. After making that declaration, he's free to block transactions and seize assets associated with that threat [in this case, remittance payments he intends to fund his shiny new wall]"