Sen. Ted Cruz, R-Texas talks with reporters on Capitol Hill in Washington in this Dec. 13, 2014, file photo. Unhappy Republicans say Sen. Ted Cruz of Texas left a gift certificate good for confirmation of 12 judicial appointments for President Barack Obama and Democrats this holiday season. Only a month or so ago, voters delivered them a lump of coal in midterm elections. (AP Photo/Lauren Victoria Burke, File)
FILE - In this Dec. 13, 2014 file photo, Sen. Ted Cruz, R-Texas talks with reporters on Capitol Hill in Washington. Unhappy Republicans say Sen. Ted Cruz of Texas left a gift certificate good for confirmation of 12 judicial appointments for President Barack Obama and Democrats this holiday season. Only a month or so ago, voters delivered them a lump of coal in mid-term elections. (AP Photo/Lauren Victoria Burke, File) **FILE**
Sen. Ted Cruz, Texas Republican, tried to take a stand on immigration enforcement and scuttled a deal arranged by Senate GOP leaders, thus allowing Democrats more time to approve key nominees before they lose control of the Senate at the end of the year. (Associated Press photographs)
Sen. Ted Cruz, Texas Republican, talks with reporters after the Senate voted on a $1.1 trillion spending bill to fund the government through the next fiscal year on Saturday, Dec. 13, 2014, on Capitol Hill in Washington. (AP Photo/Lauren Victoria Burke) ** FILE **
Sen. Kirsten Gillibrand, D-N.Y., listens Sen. Ted Cruz, R-Texas, speaks to reporters during a news conference about a bill regarding military sexual assault cases on Capitol Hill in Washington, Tuesday, July 16, 2013. (AP Photo/Charles Dharapak)
Sen. Ted Cruz, Texas Republican, has called on Senate GOP leaders to refuse to confirm almost all of President Obama's nominations to judicial or executive offices until the president rescinds his amnesty order. (Associated Press)
With potential candidates including Texas Sen. Ted Cruz, former Arkansas Governor Mike Huckabee and former Sen. Rick Santorum, Family Research Council President Tony Perkins, said there's no clear front-runner yet for the conservative Christian vote. (Associated Press Photographs)
Sen. Ted Cruz of Texas led insurrections against Republican leaders several times over the past two years and refused to say in a television interview Tuesday whom he would support, but he called Mr. McConnell to congratulate him on his re-election.
Sen. Ted Cruz (right), Texas Republican, joined a group of local pastors in decrying the city's move to subpoena sermons and other communications related to a court battle over the Houston Equal Rights Ordinance (HERO), also known as the "bathroom bill." (Associated Press Photographs)
U.S. Sen. Ted Cruz (R-Texas) is surrounded by preachers as he addresses a crowd at a Houston church, Thursday, Oct. 16, 2014. Cruz spoke about a legal dispute involving several pastors fighting subpoenas from Houston city attorneys demanding they turn over copies of any sermons they delivered that relate to Houston’s equal rights ordinance championed by the city’s gay mayor, Annise Parker. (AP Photo/Pat Sullivan)
U.S. Sen. Ted Cruz (R-Texas) is surrounded by preachers as he addresses a crowd at a Houston church, Thursday, Oct. 16, 2014. Cruz spoke about a legal dispute involving several pastors fighting subpoenas from Houston city attorneys demanding they turn over copies of any sermons they delivered that relate to Houston’s equal rights ordinance championed by the city’s gay mayor, Annise Parker. (AP Photo/Pat Sullivan)
GOP Gap: Ted Cruz (left) and Rand Paul are together at a lot of Republican events as the top potential candidates in the race for the party's presidential nomination, but their campaign styles are vastly different. Mr. Cruz attracts economic and national defense conservatives, as well as the Christian right, while Mr. Paul appeals to voters regardless of religion, political inclination or lifestyle. (Getty Images)
Sen. Ted Cruz, Texas Republican, called the court's decision not to take on any gay marriage cases"tragic" and vowed to take action. (associated press)
Sen. Ted Cruz, R-Texas, speaks during the Iowa Faith and Freedom Coalition fall fundraiser on Saturday, Sept. 27, 2014, in Des Moines, Iowa. (AP Photo/Justin Hayworth)
** FILE ** Sen. Ted Cruz, Texas Republican, said he thinks an American jihadists fighting with Islamic State militants should be exiled from the country, but some conservatives say the militants should be stripped of their U.S. citizenship for joining the extremist group. (Associated Press)