law two bills advanced by Harris to combat human trafficking. In November, Harris presented a report titled "The State of Human Trafficking in California 2012" at a symposium attended by U.S. Secretary of Labor Hilda Solis and Attorney General Morales, outlining the growing prevalence of human trafficking in the state, and highlighting the involvement of transnational gangs in the practice. In early 2014, Harris issued a report titled, "Gangs Beyond Borders: California and the Fight Against Transnational Crime", addressing the prominent role of drug, weapons, and human trafficking, money laundering, and technology crimes employed by various drug cartels from Mexico, Armenian Power, 18th Street Gang, and MS-13 and offering recommendations for state and local law enforcement to combat the criminal activity. Later that year, Harris led a bipartisan delegation of state attorneys general to Mexico City to discuss transnational crime with Mexican prosecutors. Harris then convened a summit focused on the use of technology to fight transnational organized crime with state and federal officials from the U.S., Mexico, and El Salvador. U.S. Senate (2017–2021) Election After more than 20 years as a U.S. Senator from California, Senator Barbara Boxer announced in January 2015 that she would not run for reelection in 2016. Harris announced her candidacy for the Senate seat the following week. Harris was a top contender from the beginning of her campaign. The 2016 California Senate election used California's new top-two primary format where the top two candidates in the primary would advance to the general election regardless of party. In February 2016, Harris won 78% of the California Democratic Party vote at the party convention, allowing Harris's campaign to receive financial support from the party. Three months later, Governor Jerry Brown endorsed her. In the June 7 primary, Harris came in first with 40% of the vote and won with pluralities in most counties. Harris faced congresswoman and fellow Democrat Loretta Sanchez in the general election. It was the first time a Republican did not appear in a general election for the Senate since California began directly electing senators in 1914. On July 19, President Barack Obama and Vice President Joe Biden endorsed Harris. In the November 2016 election, Harris defeated Sanchez, capturing over 60% of the vote, carrying all but four counties. Following her victory, she promised to protect immigrants from the policies of President-elect Donald Trump and announced her intention to remain Attorney General through