The 7-year deadline to pass the ERA (Equal Rights Amendment) expired with only 35 of the required 38 states ratifying the amendment. (Indiana was the last state to ratify with a single tie-breaking vote.) Congress extended the deadline to June 30, 1982.
The extension was controversial and President Carter signed it while expressing doubt about proper procedure. The issue of the extension being unconstitutional went to the Supreme Court who, in October 1982, declared it a moot point since no other states ratified the ERA in the extension period anyway.