Reporters set up outside the U.S. Supreme Court on April 1. (Al Drago/Getty Images)

The U.S. Supreme Court is weighing whether to overrule two of its own long-standing legal precedents – one about presidential power over federal agencies, which has been in place for over 90 years, and another about campaign financing by political parties.

In the past 20 Supreme Court terms, about 1% of cases have overruled an earlier decision

% of U.S. Supreme court cases that overturned older rulings in each 20-term period

Note: While the Supreme Court was founded in 1789, it didn’t rule on its first case until 1791, and it didn’t overrule a prior decision until 1810.

Source: Library of Congress and U.S. Supreme Court Database at Pennsylvania State University.

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In the past 20 Supreme Court terms, about 1% of cases have overruled an earlier decision

% of U.S.…