arrived secretly in Washington, D.C. after an alleged assassination plot in Baltimore, Maryland. Major legislation June 16, 1860: Pacific Telegraph Act of 1860, ch. 147, March 2, 1861: Morrill Tariff, ch. 68, December 18, 1860 (introduced): Crittenden Compromise, rejected by the House of Representatives and the Senate Constitutional amendments March 2, 1861: Approved an amendment to the United States Constitution that would shield "domestic institutions" of the states (which in 1861 included slavery) from the constitutional amendment process and from abolition or interference by Congress, and submitted it to the state legislatures for ratification This amendment, commonly known as the Corwin Amendment, has not been ratified and is still pending before the states. Treaties March 8, 1859: Quinault Treaty ratified, March 8, 1859: Point No Point Treaty ratified, States admitted and territories organized January 29, 1861: Kansas admitted as a state, ch. 20, February 28, 1861: Colorado Territory organized, ch. 59, March 2, 1861: Nevada Territory organized, ch. 83, March 2, 1861: Dakota Territory organized, ch. 86, Party summary Senate House of Representatives Leadership Senate President: John C. Breckinridge (D) President pro tempore: Benjamin Fitzpatrick (D), until February 26, 1860 Jesse D. Bright (D), June 12–13, 1860 Benjamin Fitzpatrick (D), June 26, 1860 – December 2, 1860 Solomon Foot (R), elected February 16, 1861 House of Representatives Speaker: William Pennington (R), elected February 1, 1860, after 44 rounds of balloting Democratic Caucus Chairman: George S. Houston Members This list is arranged by chamber, then by state. Senators are listed by class, and representatives are listed by district. Skip to House of Representatives, below Senate Senators were elected by the state legislatures every two years, with one-third beginning new six-year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term began in the last Congress, requiring reelection in 1862; Class 2 meant their term began with this Congress, requiring reelection in 1864; and Class 3 meant their term ended with this Congress, requiring reelection in 1860. Alabama 2. Clement C. Clay Jr. (D), until January 21, 1861 3. Benjamin Fitzpatrick (D), until January 21, 1861 Arkansas 2. William K. Sebastian (D) 3. Robert W. Johnson (D) California 1. David C. Broderick (D), until September 16, 1859 Henry P. Haun (D), November 3, 1859 – March 4, 1860 Milton Latham (D), from