AP
FILE - In this June 1, 2017, file photo, the justices of the U.S. Supreme Court gather for an official group portrait to include new Associate Justice Neil Gorsuch, top row, far right at the Supreme Court Building in Washington. Seated, from left are, Associate Justice Ruth Bader Ginsburg, Associate Justice Anthony M. Kennedy, Chief Justice John Roberts, Associate Justice Clarence Thomas, and Associate Justice Stephen Breyer. Standing, from left are, Associate Justice Elena Kagan, Associate Justice Samuel Alito Jr., Associate Justice Sonia Sotomayor, and Associate Justice Neil Gorsuch. In different circumstances, Ginsburg might be on a valedictory tour in her final months on the Supreme Court. But in the era of Donald Trump, the 84-year-old Ginsburg is packing her schedule and sending signals she intends to keep her seat on the bench for years. (AP Photo/J. Scott Applewhite, File)
- J. Scott Applewhite
In this Aug. 19, 2016, file photo, Supreme Court Justice Ruth Bader Ginsburg is introduced during the keynote address for the State Bar of New Mexico's Annual Meeting in Pojoaque, N.M. In different circumstances, Ginsburg might be on a valedictory tour in her final months on the Supreme Court. But in the era of Donald Trump, the 84-year-old Ginsburg is packing her schedule and sending signals she intends to keep her seat on the bench for years. (AP Photo/Craig Fritz, File)
- Craig Fritz
FILE - In this July 31, 2014, file photo, Associate Justice Ruth Bader Ginsburg in her Supreme Court chambers in Washington. In different circumstances, Ginsburg might be on a valedictory tour in her final months on the Supreme Court. But in the era of Donald Trump, the 84-year-old Ginsburg is packing her schedule and sending signals she intends to keep her seat on the bench for years. (AP Photo/Cliff Owen, File)
- Cliff Owen
FILE - In this June 1, 2017, file photo, Associate Justice Ruth Bader Ginsburg joins other justices of the U.S. Supreme Court for an official group portrait at the Supreme Court Building in Washington. In different circumstances, Ginsburg might be on a valedictory tour in her final months on the Supreme Court. But in the era of Donald Trump, the 84-year-old Ginsburg is packing her schedule and sending signals she intends to keep her seat on the bench for years. (AP Photo/J. Scott Applewhite, File)
- J. Scott Applewhite
In this Sept. 20, 2017, file photo, U.S. Supreme Court Justice Ruth Bader Ginsburg reacts to applause as she is introduced by William Treanor, Dean and Executive Vice President of Georgetown University Law Center, at the Georgetown University Law Center campus in Washington. In different circumstances, Ginsburg might be on a valedictory tour in her final months on the Supreme Court. But in the era of Donald Trump, the 84-year-old Ginsburg is packing her schedule and sending signals she intends to keep her seat on the bench for years.(AP Photo/Carolyn Kaster, File)
- Carolyn Kaster
FILE - In this Feb. 6, 2017 file photo, Supreme Court Justice Ruth Bader Ginsburg speaks at Stanford University in Stanford, Calif. In different circumstances, Ginsburg might be on a valedictory tour in her final months on the Supreme Court. But in the era of Donald Trump, the 84-year-old Ginsburg is packing her schedule and sending signals she intends to keep her seat on the bench for years. (AP Photo/Marcio Jose Sanchez, File)
- Marcio Jose Sanchez