Specter was known for his bipartisan work. He switched parties toward the end of his career, saying the Republican Party had gotten too extreme. Specter then lost in the Democratic primary in 2010. Sen. Pat Toomey (R-Pa.) replaced Specter in the Senate later that year.

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The resolution, which passed by unanimous consent, expresses “profound sorrow at the death of the Honorable Arlen Specter” and conveys the condolences of the Senate to his family.

Sen. Bob CaseyBob CaseyOvernight Finance: Funding bill expected tonight | Trump takes on Boeing | House rejects push for IRS impeachment vote | Dow hits new high Dems introduce ‘Buy America’ amendment to water bill Overnight Finance: Trump adviser softens tone on NAFTA | Funding bill to be released Tuesday | GOP leader won't back Trump tariff plan MORE Jr. (D-Pa.) introduced the resolution, and every member of the Senate was a co-sponsor.

The Senate also passed H.R. 3187, the March of Dimes Commemorative Coin Act, which was introduced by Rep. Robert Dold (R-Ill.), by unanimous consent. The bill instructs the secretary of the Treasury to mint a coin commemorating the anniversary of the March of Dimes Foundation.