John Cornyn is the senior senator from Texas. He served as a district judge in Texas from 1985 until 1991. He was then elected to the Texas Supreme Court, a position he held for six years. In 1998, he was elected Texas Attorney General, serving one four-year term before running for Senate in 2002. He was re-elected to the Senate for a third term in 2014.
Cornyn has risen through the ranks of the Republican conference fairly quickly. In 2006, he was selected as Vice Chairman of the Senate Republican Conference. He served for four years as the head of the National Republican Senatorial Committee. In this role, Cornyn towed the party line and did not endorse conservative candidates like now-senators: Marco Rubio and Rand Paul. In the 2010 Florida primary, he explicitly endorsed Charlie Crist over Rubio.
In 2012, he was elected Senate Minority Whip under leader Mitch McConnell. He serves on the Budget, Finance, and Judiciary Committees. He chairs the Finance Subcommittee on International Trade, Customs, and Global Competitiveness and the Judiciary Subcommittee on The Constitution. Overall, Cornyn is a reliable vote for Republicans yet has not led many conservative fights, despite his official leadership position. Since the arrival of Senator Ted Cruz, Cornyn has moved the right on fiscal issues.
Because Senator Cornyn serves on the Judiciary Committee and represents Texas, he is closely watched by his peers and the media when immigration issues arise. Cornyn seems to flirt with supporting amnesty during each push of the issue since 2006, but ultimately withdraws at the last moment. Since 2013, he has attempted to offer a watered down border amendment which conservative groups argued would have provided cover for supporting the Gang of 8 amnesty bill. More recently, Cornyn has expressed his support for the DREAM Act.
As Minority Whip, Cornyn has the unique position of being able to influence other members of the Republican Party. However, he has worked counter to several conservative initiatives; examples include major budget battles and opposing the effort to defund Obamacare. As is the case with official positions in Leadership, Cornyn will vote against a bill, but decline to use his official Leadership position to encourage members to unite behind the conservative position. However, Cornyn has consistently supported social conservative causes and has been a reliable vote for defending and advancing 2nd Amendment rights.
There is no other state more important to conservatives than Texas. Texas has lead the way on rejecting the Medicaid expansion, EPA regulations, Common Core, and pushing for a secure border and interior enforcement. Yet, Cornyn seems to take a wait and see approach to several of these issues despite the leadership show at the state level in Texas. As the Republican Whip Cornyn has the potential to one day be Majority or Minority Leader in the Senate and that alone makes him one of the most important members to watch.
 Since 2013 he attempted a watered down voter bill, more recently Cornyn has expressed support for the DREAM Act.
 Fawn Johnson, Absent Action, Cornyn has a lot to say on immigration, National Journal (June 28, 2011).
Food & Drug Administration:
After serving as Texas Attorney General from 1999-2002, John Cornyn, supported by the Texas Republican Party, easily won the 2002 Primary and was elected to his first term in the U.S. Senate filling the seat of outgoing Texas Senator Phil Gramm. Cornyn was re-elected in 2008 and in the running for his re-election in 2014.