Packwood differed with President Richard Nixon on some significant issues. He voted against Nixon's Supreme Court nominees Clement Haynsworth and G. Harrold Carswell, "two of Nixon's most embarrassing defeats," as well as Nixon's proposals for the B-1 bomber, submarines capable of carrying the Trident missile and the supersonic transport (SST). He became the first Senate Republican to support Nixon's impeachment. In a White House meeting of November 15, 1973, he told President Nixon that the public no longer believed the President and no longer trusted the integrity of the administration.