Korean companies invest billions in the U.S., can’t get appropriate visas due to the U.S.’s crappy system, and the skilled people brought over to help make these investments are rounded up like criminals.
You can’t demand Korea invest in the U.S., not have the human capital to support those investments, not have the visa system to get that capital imported legally, and then get mad when in order to fulfill the investment demands the Korean companies don’t get their skilled workers properly documented.
Trump seems to recognize that it’s a problem, yet he did nothing to fix it while leading the charge on an incredibly expensive mass deportation operation while also demanding foreign countries invest in the U.S..