That's not his fight. Trump is a big-picture person and this issue will take care of itself. His main focus is securing the borders, fighting for fair trade deals, and eliminating the crony capitalists in government.
It’ll “take care of itself” as well as abortion has in the 43 years since Roe vs. Wade. This is not the kind of issue that “takes care of itself.” It’s the kind of issue that needs to be vigorously and actively fought on all fronts if anything is going to change at all.