President Donald Trump is nominating white men to America's federal courts at a rate not seen in nearly 30 years, threatening to reverse a slow transformation toward a judiciary that reflects the nation's diversity.

So far, 91 percent of Trump's nominees are white, and 81 percent are male, an Associated Press analysis has found. Three of every four are white men, with few African-Americans and Hispanics in the mix. The last president to nominate a similarly homogenous group was George H.W. Bush.

The shift could prove to be one of Trump's most enduring legacies. These are lifetime appointments, and Trump has inherited both an unusually high number of vacancies and an aging population of judges. That puts him in position to significantly reshape the courts that decide thousands of civil rights, environmental, criminal justice and other disputes across the country. The White House has been upfront about its plans to quickly fill the seats with conservatives, and has made clear that judicial philosophy tops any concerns about shrinking racial or gender diversity.