Second Enforcement Act

{{Short description|United States federal law}}

{{Use American English|date=June 2025}}

{{Infobox U.S. legislation

| name = Enforcement Act of 1871

| fullname = An Act to amend an Act approved May thirty-one, eighteen hundred and seventy, entitled "An Act to enforce the Rights of Citizens of the United States to vote in several States of this Union, and for other Purposes."

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| nickname = Civil Rights Act of 1871, Second Ku Klux Klan Act

| enacted by = 41st

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| cite statutes at large = {{usstat|16|433}}–440

| acts amended = Enforcement Act of 1870

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| introducedin = House

| introducedbill = H.R. 2634

| introducedby = John C. Churchill (R–NY)

| introduceddate = January 9, 1871

| committees = House Judiciary

| passedbody1 = House

| passeddate1 = February 15, 1871

| passedvote1 = 144 - 64{{cite web |url=http://memory.loc.gov/cgi-bin/ampage?collId=llcg&fileName=097/llcg097.db&recNum=474 |title=Congressional Globe, 41st Congress, 3 session, page 1285 |publisher=Library of Congress |access-date=November 16, 2012}}

| passedbody2 = Senate

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| passeddate2 = February 24, 1871

| passedvote2 = 39 - 10{{cite web |url=http://memory.loc.gov/cgi-bin/ampage?collId=llcg&fileName=098/llcg098.db&recNum=232 |title=Congressional Globe, 41st Congress, 3 session, page 1655 |publisher=Library of Congress |access-date=November 16, 2012}}

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| signedpresident = Ulysses S. Grant

| signeddate = February 28, 1871

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The Second Enforcement Act of 1871, sometimes called the Civil Rights Act of 1871 or the Second Ku Klux Klan Act, was a United States federal law. The act was the second of three Enforcement Acts passed by the United States Congress from 1870 to 1871 during the Reconstruction Era to combat attacks on the voting rights of African Americans from groups like the Ku Klux Klan.