I want a conservative president with balls. Do this same kind of shit to liberal states, in spades.
You issued driver licenses to illegal immigrants? No highway funds for you.
You're a "sanctuary city" and let illegal immigrants go free? No SNAP or other welfare funds for you.
You offer illegal immigrants lower tuition to state universities than citizens from another state pays? No federally backed loans for state colleges.
You want to make pot legal? No funds for law enforcement or drug treatment centers for you.
I could go on with more ways that the feds could screw over liberal states that break federal laws, but you get the idea.