The Biden administration has fewer top government leaders in place than other recent presidents at this point in their terms, a pace that’s been slowed by a siege at the Capitol, an impeachment trial, a plague and a series of snowstorms.

But activists who pushed Biden to nominate a diverse Cabinet are also noticing another phenomenon: Many of the president’s Black, Latino, Asian and Native American nominees are encountering more political turbulence than their White counterparts, further drawing out the process of staffing the federal government.

Controversy has centered on endangered nominee Neera Tanden, who would be the first Indian American to lead the Office of Management and Budget, typically a low-profile post. Her detractors, including Democratic Sen. Joe Manchin III of West Virginia, have seized on scores of pointed attacks that Tanden has made via social media in recent years — a line of criticism that women’s groups say is unfair because it focuses on her tone rather than her qualifications or policies.

Activists say the concerns raised over Tanden are part of a broader pattern imperiling many of Biden’s nominees of color, making their confirmation process rougher and meaner than in previous years and when compared with their White counterparts. Many of these nominees are still likely to go forward along mostly partisan lines, but with their qualifications scrutinized more closely and their reputations attacked more forcefully than their White counterparts, activists say.

“We are concerned with what seems like foot-dragging and an effort to slow down the confirmation process of eminently qualified individuals and the fact that these nominees are women, people of color, sons or daughters of immigrants and there seems to be a pattern that is very troubling,” said Janet Murguía, the president of UnidosUS, a Latino-focused group. “It seems like this treatment is a double standard because we’re seeing that historically other administrations have been able to move much more quickly.”