In a development some are describing as a win for Sen. Elizabeth Warren, a Wall Street banker nominated by President Barack Obama for a senior post at the Treasury Department has withdrawn himself from consideration.

Antonio Weiss, an executive at financial giant Lazard, sent a letter to Obama this weekend asking that his nomination for Under Secretary for Domestic Finance not be resubmitted to the Senate. 

Since his nomination in November, Weiss has faced strong criticism from Warren. Among her concerns was Weiss’s role in “corporate inversions”—what the Massachusetts Democrat described as when “companies renounce their American citizenship and turn their backs on this country simply to boost their profits.” She wrote in November:

A statement from White House spokeswoman Jennifer Friedman on Weiss’s withdrawal read, in part: “Mr. Weiss made the request to avoid the distraction of the lengthy confirmation process that his renomination would likely entail. “

As MSNBC reported, Warren “was able to rally opposition to Weiss not just from reliable progressives like Sens. Al Franken and Bernie Sanders, but Dick Durbin, the Senate’s No. 2 Democrat, and also Joe Manchin, the most conservative Democrat in the upper chamber.”