The controversial nominee faced uniform opposition from Republicans and was not a well-liked pick by some key Democrats
The nominee, a former special agent at ATF and current gun control lobbyist, was scrutinized immediately upon his nomination for his publicly anti-firearm positions. Moderate Democrat Senators in the evenly-split chamber signaled to the Biden administration that they were not fans of the choice and it was unclear whether Chipman would have made it through a confirmation vote.
Senate Republicans universally opposed his nomination. Minority Leader Mitch McConnell described Chipman as an "anti-gun extremist."
There is still sanity among those Democrats who are not in guaranteed districts and would have to actually campaign for reelection on the basis of their voting record. Too bad for those districts under complete Democrat control; it doesn't matter how they vote the Democrat-preferred candidate will always win by a slim margin when the votes are counted by the Democrat machine.