Why one may be needed:
The problem goes much further than one official. Trump’s opponents are burrowed throughout the federal bureaucracy, and at senior as well as junior levels.If you don't want to do your job, then make way for someone who will...
Contrary to what some conservatives may suspect, they are not the majority of government employees. Most are loyal to the Constitution and to their duties. But there are enough die-hard Barack Obama appointees, and lifelong leftists, to frustrate the Trump administration — and they may be encouraging each other to do so.
The press is certainly encouraging them to “resist.” Some journalists are conflating Yates’s firing with the “Saturday Night Massacre,” Nixon’s firing of key Department of Justice staff to thwart the Watergate investigation. That was a classic abuse of presidential power. The Yates episode is the opposite — an illegitimate abuse of power by bureaucrats to undermine the president.