Barrett is also scheduled on Tuesday to meet Senate Judiciary Committee Chairman Lindsey Graham at 5:30 p.m. EDT, as well as other Republican Judiciary Committee members, including Senators Chuck Grassley, Mike Lee and Mike Crapo.
If Barrett is confirmed by the Senate, as expected, she would further tilt the court to the right, entrenching a 6-3 conservative majority.
Democrats are fiercely opposing Barrett, who would replace Justice Ruth Bader Ginsburg, a champion of gender equality and other liberal causes. She died on Sept. 18 at age 87.
Democrats argue the vacancy should be filled after the next president is chosen on Nov. 3, a view shared by a majority of Americans, according to recent national polls.