George W Bush had times of GOP controlling both Senate and the House plus a conservative USSC, and he did nothing with it, unless you count blowing down the barriers of federal control over the states with Gonzales v Raich.
A Dem president with both House and Senate might not be so lazy. I hope we don’t find out.
Our guys quake in their boots when we control the Presidency, Senate, Supreme Court, most governorships and most State Houses. If democrats controlled what we control they'd turn the country into a socialist hellhole in the blink of an eye.