When Bryson DeChambeau tees off at the U.S. Open this afternoon, he will be doing so with the future bearing down on him. The LIV Golf Tour is about to lose its funding from the Saudi Public Investment Fund, which means that DeChambeau, Jon Rahm, and the rest of the former PGA greats who defected to LIV will soon have a decision to make: Do they come crawling back to the PGA, or find new day jobs? DeChambeau’s options may be more limited than R…