World War II · 1941

Pearl Harbor and the Declaration of War

Japan attacked the U.S. fleet at Pearl Harbor, Hawaii, on December 7, 1941. The next day President Roosevelt asked Congress to declare war. The Senate voted unanimously; the House vote had one dissent, from Rep. Jeannette Rankin of Montana, who had also voted against entering World War I in 1917.

Resulting law: Declaration of war on Japan (Pub. L. 77-328)

The USS Arizona burning after the attack on Pearl Harbor, December 7, 1941
The USS Arizona burning after the attack on Pearl Harbor, December 7, 1941. Photo: U.S. Navy, National Archives (public domain).

From event to law

How did Congress vote to enter World War II? Open any vote below to see every legislator.

  1. EventDecember 7, 1941

    Attack on Pearl Harbor

    Japanese forces attack the U.S. naval base at Pearl Harbor and other U.S. bases in the Pacific.

  2. EventDecember 8, 1941

    "A date which will live in infamy"

    President Roosevelt addresses a joint session of Congress and asks for a declaration of war.

  3. VoteDecember 8, 1941

    Senate votes

    The Senate approves S.J. Res. 116 without a dissenting vote.

    Senate, 77th Congress, roll call 85

    82 yea0 nayPassed
    PartyYeaNay
    Democrat560
    Republican240
    Independent10
    Progressive10
    See how every senator voted
  4. VoteDecember 8, 1941

    House votes

    The House approves the declaration with one no vote.

    House, 77th Congress, roll call 77

    388 yea1 nayPassed
    PartyYeaNay
    Democrat2340
    Republican1491
    Progressive30
    American Labor10
    Ind. Democrat10
    See how every representative voted
  5. LawDecember 8, 1941

    Signed

    President Roosevelt signs the declaration the same afternoon.

  6. What came nextDecember 11, 1941

    Germany and Italy

    Germany and Italy declare war on the United States, and Congress declares war on both the same day.

Look up the votes

Party labels are those used at the time of the vote. The parties' coalitions and positions have changed over time, so a party name in 1864 or 1919 does not map directly onto the party today.

Sources

Tallies count members recorded as voting yea or nay. Official counts printed at the time can differ by a vote or two because of pairs and later corrections.