https://www.dol.gov/agencies/whd/government-contracts/minimum-wage

Obama issued an executive order to raise the wages of federal contractors to a minimum of $12.15/hr after the Pelosi/Schumer Congress fumbled the ball. Biden was reluctantly unopposed to signing a $15/min national bill, until the Manchin/Sinema Senate quashed it back in '21.

And it should be noted that the Min Wage hike Bush signed was only on his desk when Pelosi stapled it to the Bank Bailout of '08.

So this isn't a Dem/Rep thing, so much as it is a particular moment of convenience when certain progressive politicians can choose to exert leverage over their more conservative colleagues.

Thanks Obama

Obama did nothing with it.

And he had a supermajority for a time, which makes his inaction that much worse.