Nearly all of federal appeals Judge Brett Kavanaugh’s female law clerks—21 of the 25 he hired—later clerked for the U.S. Supreme Court, a fact touted in a letter sent Thursday to the U.S. Senate Judiciary Committee.

Kavanaugh, nominated Monday to succeed retiring Justice Anthony Kennedy on the Supreme Court, has hired 48 law clerks—25 women and 23 men—since 2006, when he was appointed to the U.S. Court of Appeals for the D.C. Circuit. At his nomination ceremony Monday, Kavanaugh said: “I look for the best. My law clerks come from diverse backgrounds and points of view. I am proud that a majority of my law clerks have been women.”