But her Monday appearance comes just three days after the Supreme Court's announcement that physicians had discovered a malignancy on Ginsburg's pancreas and that she subsequently had three weeks of radiation treatment.

Friday's announcement from the Supreme Court's public information office said the pancreatic "tumor was treated definitively and there is no evidence of disease elsewhere in the body." The tumor was first detected after a blood test in July.

Ginsburg's health has been a recurring subject of public interest because the high court, with its membership becoming increasingly conservative, is poised to transform the law in America. Conservatives hold the majority 5-4, but the left has worked to minimize the rollback of liberal precedents from earlier decades, including to preserve abortion rights.

Since coming to office, Trump has made two appointments, Neil Gorsuch in 2017 and Brett Kavanaugh in 2018, deepening the conservative bloc.

Still, those nominees succeeded justices who generally aligned conservative. If the health of liberal bulwark Ginsburg would lead her to retire during Trump's presidency and he were able to make a third lifetime appointment, he could truly transform the country's highest court. It would be a 6-3 bench, able to shift the law in America dramatically to the right.