For a more recent immigration profile of Congress, see “In 116th Congress, at least 13% of lawmakers are immigrants or the children of immigrants.“

As the debate over the nation’s immigration laws continues on Capitol Hill, Congress has its own share of lawmakers for whom the immigrant experience is a personal one: At least 64 of the current 529 voting members of Congress (or 12%) are immigrants or the children of immigrants.

There are 12 foreign-born members of the 115th Congress – 11 representatives and one senator, Mazie Hirono, D-Hawaii, who was born in Japan. At least 52 other members were born in the United States or its territories to at least one immigrant parent, including 37 in the House and 15 in the Senate, according to a Pew Research Center analysis of biographical information from the Congressional Research Service, news stories, and members’ official websites and genealogical records through Aug. 17.

Democrats far outnumber Republicans among both first- and second-generation immigrants in both chambers. All but one of the 12 foreign-born lawmakers are Democrats – the exception is Cuban-born Rep. Ileana Ros-Lehtinen, R-Fla. – while Democrats account for 38 of the 53 members who are children of immigrants. Republicans account for 13 second-generation members. In addition, Sen. Bernie Sanders of Vermont, whose father came to the U.S. from Poland, is an independent, though he caucuses with Democrats.

First- or second-generation immigrants in Congress represent 23 different states. California has by far the most: At least 19 of the state’s 53 House members – more than a third – are immigrants or the children of immigrants, as is Democratic Sen. Kamala Harris, whose mother emigrated to the U.S. from India and whose father emigrated from Jamaica. New York and Florida each have five first- or second-generation immigrants among their members of Congress; Maryland and Illinois each have four.

Countries and territories of origin vary for both first- and second-generation immigrant lawmakers. Seven of the 11 foreign-born House members emigrated from Latin American or Caribbean countries (three from Mexico, two from Cuba, one from the Dominican Republic and one from Guatemala), while the other four hailed from different Asian countries and territories (India, Japan, Taiwan and Vietnam). Among second-generation lawmakers, most have European, Latin American or Caribbean heritage: Their families come from 29 countries and territories, including Mexico (10 lawmakers), Cuba (seven), Germany (six), and Canada, India and Jamaica (three each).

The dozen members of the House and Senate who were born in another country account for 2% of Congress – a slightly higher share than in the last Congress (1%), but down substantially from earlier Congresses and far below the foreign-born share of the U.S. population as a whole (14%). U.S.-born children of immigrants (second-generation Americans) make up another 12% of the nation’s population.

Some foreign-born members of Congress have unique back stories. One is Rep. Stephanie Murphy, D-Fla., whose parents fled Communist-controlled Vietnam aboard a boat when she was just an infant. Reps. Ros-Lehtinen and Albio Sires, D-N.J., who was also born in Cuba, came to the U.S. as children when their families escaped Fidel Castro’s government.

Reps. Adriano Espaillat, D-N.Y., and Ruben Kihuen, D-Nev., are the first formerly unauthorized immigrants to serve in the U.S. Congress. Espaillat, born in the Dominican Republic, and Kihuen, born in Mexico, were both brought to the U.S. as young children by their parents.

In the current Congress, several second-generation legislators’ parents settled in the U.S. to evade oppressive regimes or religious violence.

Rep. Michael Bennet, D-Colo., is the son of a Polish Holocaust survivor. His mother and Jewish grandparents were imprisoned in the Warsaw ghetto during World War II. His grandparents smuggled his mother – who was just a baby – to safety through an underground network. Rep. Anna Eshoo, D-Calif., was born in the U.S. to an Armenian mother and Iranian father, both of whom fled anti-Christian violence in the Middle East.

Others, like Rep. Grace Meng, D-N.Y., were born into immigrant families well on their way to achieving the American Dream. Her father, Jimmy Meng – born in China and raised in Taiwan – became the first Asian American elected to the New York State Assembly. Rep. Justin Amash, R-Mich., is the son of a Palestinian refugee who settled in Michigan and built a successful business. (Though included in this analysis, the Palestinian territories are not recognized as an independent state by the U.S. State Department.)

Throughout history, 413 foreign-born Americans have served as members of Congress (out of more than 12,000 total members), according to an earlier Pew Research Center analysis and additional information from the Congressional Research Service. That includes 353 immigrants who served only in the House of Representatives, 45 who served in the Senate and 15 who served in both chambers.

Under the U.S. Constitution, an immigrant taking office in the House must be a U.S. citizen for seven years or more, age 25 or older and living in the state where he or she is elected. To serve in the Senate, nine years of citizenship are required, and the person must be 30 or older and live in the represented state when elected. Those born outside the U.S. cannot become president. For example, if the speaker of the House were foreign born, he or she could not become president in the event that the president and vice president both die or leave office.

Our count of first-generation lawmakers does not include members who were born abroad but who gained U.S. citizenship through their American parents after meeting legal requirements. (There have been 21 members in this category since 1949.) Nor does it include those born to U.S. citizen parents in certain U.S. territories, such as Sen. John McCain, R-Ariz., who was born in the Panama Canal Zone when it was under U.S. jurisdiction. The list also excludes 19 lawmakers who left office for various reasons since the beginning of the 115th Congress.

Our tally of second-generation legislators relied on published news stories, congressional members’ public comments and, when available, genealogical records. If you know of an additional legislator not included on our list, send us an email at facttank@pewresearch.org.

Correction (Aug. 30, 2018): A previous version of the table below gave an incorrect birth country for Rep. Henry Cuellar’s mother. In addition, the text and both charts in this post were updated Jan. 23, 2019, to reflect Tulsi Gabbard’s paternal parentage; her father was born in American Samoa.

First- and second-generation immigrants in the 115th U.S. Congress

Name First or second generation Parent’s or member’s birthplace Office Party State Amash, Justin Second Mother: Syria; Father: Palestinian terr. Representative Republican MI Barragán, Nanette Second Both parents: Mexico Representative Democrat CA Bennet, Michael Second Mother: Poland Senator Democrat CO Bera, Ami Second Both parents: India Representative Democrat CA Blumenthal, Richard Second Father: Germany Senator Democrat CT Boyle, Brendan Second Father: Ireland Representative Democrat PA Brown, Anthony Second Mother: Switzerland; Father: Cuba/Jamaica Representative Democrat MD Burgess, Michael Second Father: Canada Representative Republican TX Butterfield Jr., G.K. Second Father: Bermuda Representative Democrat NC Carbajal, Salud First Mexico Representative Democrat CA Cárdenas, Tony Second Both parents: Mexico Representative Democrat CA Chu, Judy Second Mother: China Representative Democrat CA Clarke, Yvette Second Both parents: Jamaica Representative Democrat NY Correa, Lou Second Both parents: Mexico Representative Democrat CA Crowley, Joseph Second Mother: Ireland Representative Democrat NY Cruz, Ted Second Father: Cuba Senator Republican TX Cuellar, Henry Second Father: Mexico Representative Democrat TX Curbelo, Carlos Second Both parents: Cuba Representative Republican FL DeLauro, Rosa Second Father: Italy Representative Democrat CT Diaz-Balart, Mario Second Both parents: Cuba Representative Republican FL Duckworth, Tammy Second Mother: Thailand Senator Democrat IL Durbin, Dick Second Mother: Lithuania Senator Democrat IL Eshoo, Anna Second Mother: Armenia; Father: Iran Representative Democrat CA Espaillat, Adriano First Dominican Republic Representative Democrat NY Gallego, Ruben Second Mother: Colombia; Father: Mexico Representative Democrat AZ Gomez, Jimmy Second Both parents: Mexico Representative Democrat CA Grijalva, Raúl Second Father: Mexico Representative Democrat AZ Harris, Andy Second Mother: Ukraine; Father: Hungary Representative Republican MD Harris, Kamala Second Mother: India; Father: Jamaica Senator Democrat CA Heinrich, Martin Second Father: Germany Senator Democrat NM Hirono, Mazie First Japan Senator Democrat HI Hoyer, Steny Second Father: Denmark Representative Democrat MD Jayapal, Pramila First India Representative Democrat WA Khanna, Ro Second Both parents: India Representative Democrat CA Kihuen, Ruben First Mexico Representative Democrat NV Kilmer, Derek Second Mother: Germany Representative Democrat WA Krishnamoorthi, Raja First India Representative Democrat IL Lieu, Ted First Taiwan Representative Democrat CA Love, Mia Second Both parents: Haiti Representative Republican UT Lowenthal, Alan Second Mother: Russia Representative Democrat CA Menendez, Robert Second Both parents: Cuba Senator Democrat NJ Meng, Grace Second Both parents: China/Taiwan Representative Democrat NY Mooney, Alex Second Mother: Cuba Representative Republican WV Murphy, Stephanie First Vietnam Representative Democrat FL Napolitano, Grace Second Mother: Mexico Representative Democrat CA Peters, Gary Second Mother: France Senator Democrat MI Risch, James Second Father: Germany Senator Republican ID Ros-Lehtinen, Ileana First Cuba Representative Republican FL Rubio, Marco Second Both parents: Cuba Senator Republican FL Ruiz, Raul First Mexico Representative Democrat CA Sánchez, Linda Second Both parents: Mexico Representative Democrat CA Sanders, Bernie Second Father: Poland Senator Independent VT Sarbanes, John Second Mother: Great Britain Representative Democrat MD Schakowsky, Janice Second Mother: Russia; Father: Lithuania Representative Democrat IL Schatz, Brian Second Father: Canada Senator Democrat HI Sires, Albio First Cuba Representative Democrat NJ Speier, Jackie Second Father: Germany Representative Democrat CA Suozzi, Thomas Second Father: Italy Representative Democrat NY Thune, John Second Mother: Canada Senator Republican SD Torres, Norma First Guatemala Representative Democrat CA Valadao, David Second Both parents: Portugal Representative Republican CA Vargas, Juan Second Both parents: Mexico Representative Democrat CA Walters, Mimi Second Father: Finland Representative Republican CA Wyden, Ron Second Both parents: Germany Senator Democrat OR

Note: Table reflects membership of the 115th U.S. Congress as of Aug. 20, 2018. Though included in this analysis, the Palestinian territories are not recognized as an independent state by the U.S. State Department. Brown’s father was born in Cuba but immigrated to the U.S. from Jamaica, where he was raised. Meng’s father was born in China but raised in Taiwan.

Source: Pew Research Center analysis obtained from U.S. Congressional Research Service (first-generation immigrant lawmakers) and legislators’ published comments and news reports (second-generation).