A special election for Ohio's 12th congressional district is held following the resignation of Republican Representative Pat Tiberi. The Republican candidate is Troy Balderson and the Democratic candidate is Danny O'Connor.
The Republican-controlled United States House of Representatives votes in favor of the repeal of the 2010 Patient Protection and Affordable Care Act and passage of the House's 2017 American Health Care Act, by a narrow, 217–213 vote. Twenty Republicans and all Democrats opposed the bill, which now heads to the United States Senate for its legislative action.
The U.S. Supreme Court rules that a lawsuit challenging Maryland's congressional redistricting plan following the 2010 Census on grounds of unconstitutional gerrymandering may proceed. The suit, which alleges that congressional district boundaries were changed to make it easier for Democrats to win in seven of the state’s eight districts, had been rejected by both district and circuit courts due to lack of standing.
The United States House Committee on Standards of Official Conduct recommends that the United States House of Representatives censure Rep. Charlie Rangel D-NY for ethics violations and be required to make restitution for any unpaid taxes.
The Republican and Democratic party caucuses in the United States House of Representatives hold leadership elections. Nancy Pelosi of the Democrats is elected as Minority Leader when the new House sits in January with John Boehner to become Speaker of the United States House of Representatives.