Surely you heard this past weekend about the Obama threat to withhold federal education funds from states who don't immediately embrace Obama's transgender bathroom policies. The current shell game of collecting money through the IRS and then sending it back to the states in the form of federal aid is merely a way for the federal government to dictate to the state how they must operate. It's certainly not a new phenomenon, either. Remember the nationwide 55-mile-per-hour speed limit? That was never a law passed by Congress. It was a gambit of Jimmy Carter to deny federal highway funds to any state that didn't play ball.
Typically, states meekly capitulate to these threats because they don't want to lose the funds. Obama knows that perfectly well, and figured he could use the threat of withholding federal funds to force his transgender bathroom agenda on the entire nation.