Peter Rey Aguilar (/ˈæɡjəˌlɑːr/ AG-yə-LAR; born June 19, 1979) is an American politician who has been chair of the House Democratic Caucus since 2023.

[15] Although the top Democratic vote-getter, with 22.6% of the vote, he finished behind Miller and Robert Dutton, the California State Senate Republican Leader.

[17] In the June 2014 primary, he finished second, qualifying for the November 2014 general election,[18] where he defeated Republican Paul Chabot with 51.4% of the vote.

[27] Aguilar's time in Congress has focused on immigration, job creation, trade practices, gun control, national security, LGBT issues, veteran affairs, drug prevention, student loan debt, and environmental protection.

[32] With Senator Dianne Feinstein and Representative Paul Cook, Aguilar introduced legislation to protect the habitat along the Santa Ana River.

[35] In addition, he has worked closely with law enforcement and local, state and federal officials and agencies to help communities recover costs incurred from the emergency response to the 2015 San Bernardino attack,[36] which took place in Aguilar's district,[37] and helped secure additional funding for survivors of the attack.

[39] He introduced the Academic Success Centers and Education Networks for Dreamers (ASCEND) Act, which would establish grants for college and university programs and services to benefit undocumented students.

[40] Aguilar voted in favor of legislation that would effectively halt the resettlement of refugees from Syria and Iraq to the U.S., citing national security concerns,[41] but subsequently criticized President Donald J. Trump's Executive Order as "xenophobic" and said it sent a message of "hate and bigotry to the rest of the world.

[43] In 2018, with Representative Will Hurd, Aguilar authored legislation that would provide a path to citizenship for DACA recipients and address border protection concerns.

In 2017, Aguilar introduced a bill that would provide active-duty service members and reservists access to training for commercial drivers’ licenses granted by the FAST Act.

[61] After the 2016 Orlando nightclub shooting, Aguilar participated in the 2016 United States House of Representatives sit-in to show support for gun control legislation.

The witnesses were Greg Jacob, Pence's counsel, who told Pence he did not have the authority to decertify the election results, and J. Michael Luttig, a retired conservative judge on the United States Court of Appeals for the Fourth Circuit, who called Donald Trump and his allies and supporters "a clear and present danger to American democracy.

"[64] For the 118th Congress:[65] Aguilar announced his candidacy for vice chair of the Democratic Caucus in September 2018, but lost to Katherine Clark by a vote of 144–90.

Aguilar's top contributors throughout his career have been JStreet PAC, League of Conservation Voters, Credit Union National Association, Matich Corporation, and New World Medical.

[74] In 2022, Aguilar was one of 16 Democrats to vote against the Merger Filing Fee Modernization Act of 2022, an antitrust package that would crack down on corporations' anti-competitive behavior.