The 42nd Congress voted 115-65 to establish Yellowstone, America's first national park -- despite concerns surrounding federalism
Sen. Rand Paul's motion to hold that the Senate cannot try an impeached official who is no longer in office was defeated 55-45. Most legal scholars agree such a trial is permissible.
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Visualize the first time in history a cabinet nominee's confirmation ended in a tie.
Explore current and historical political parties, map party control, and learn about polarization.