GRAND RAPIDS, MI - FEBRUARY 23: Republican presidential candidate, Sen. Marco Rubio (R-FL) holds a campaign rally at Lacks Enterprises February 22nd, 2016 in Grand Rapids, Michigan. Rubio opted to campaign in Michigan rather than be in Nevada on the night of the Nevada caucuses. (Photo by Bill Pugliano/Getty Images)
This photo made during an escorted visit and reviewed by the US military shows an US Army soldier walking at unused common detainee space in "Camp 6" detention facility at the US Naval Station in Guantanamo Bay, Cuba, April 8, 2014. AFP PHOTO/MLADEN ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
COLUMBIA, SC - FEBRUARY 20: Jeb Bush reacts as he announces the suspension of his presidential campaign during an election night party at the Hilton Columbia Center on February 20, 2016 in Columbia, South Carolina. Donald Trump won decisively in the South Carolina Republican Presidential Primary, the "first in the south." (Photo by Mark Makela/Getty Images)
MANCHESTER, NH - FEBRUARY 06: (L-R) Republican presidential candidates Donald Trump, Sen. Marco Rubio (R-FL) and Sen. Ted Cruz (R-TX) talk during a commercial break in the Republican presidential debate at St. Anselm College February 6, 2016 in Manchester, New Hampshire. Sponsored by ABC News and the Independent Journal Review, this is the final televised debate before voters go to the polls for the New Hampshire primary on February 9. (Photo by Joe Raedle/Getty Images)
epa05097663 Supporters and members of the activist group 'The World Can't Wait' hold a rally and march asking for President Obama to close the U.S. detention camp at Guantanamo Bay, Cuba across from the White House in Washington, DC, USA, 11 January 2016. The Guantanamo Bay Detention Camp opened 14 years ago today. EPA/JIM LO SCALZO
NORTH CHARLESTON, SC - FEBRUARY 15: Former President George W. Bush speaks in support of his brother, Republican presidential candidate Jeb Bush,at a campaign rally on February 15, 2016 in North Charleston, South Carolina. The Bush campaign is seeking support in South Carolina, where George W. Bush is popular with the state's large military population, before the Republican primary on Saturday, February 20. (Photo by Spencer Platt/Getty Images)
MANCHESTER, NH - FEBRUARY 09: Campaign sings for Republican presidential candidates Donald Trump and New Jersey Governor Chris Christie lie on the ground outside the polling place at Webster School on primary day February 9, 2016 in Manchester, New Hampshire. Candidates from both parties are making last-minute attempts to swing voters to their side on the day of the 'First in the Nation' presidential primary. (Photo by Chip Somodevilla/Getty Images)
DES MOINES, IA - JANUARY 28: Republican presidential candidate Donald Trump gestures as he speaks to veterans at Drake University on January 28, 2016 in Des Moines, Iowa. Donald Trump held his alternative event to benefit veterans after withdrawing from the televised Fox News/Google GOP debate which airs at the same time. (Photo by Christopher Furlong/Getty Images)
MANCHESTER, NH - FEBRUARY 05: Democratic presidential candidate former Secretary of State Hillary Clinton (L) looks on as Samantha, a patient at The Farnum Center alcohol and drug treatment facility, tells her story of recovering from heroin addiction on February 5, 2016 in Manchester, New Hampshire. With less than one week to go before the New Hampshire primaries, Hillary Clinton continues to campaign throughout the state. (Photo by Justin Sullivan/Getty Images)
WASHINGTON, DC - JANUARY 27: New Hampshire senators Kelly Ayotte (R-NH) (L) and Jeanne Shaheen (D-NH) testify before the Judiciary Committee about the impact of heroin and prescription drug abuse and deaths during a hearing in the Dirksen Senate Office Building on Capitol Hill January 27, 2016 in Washington, DC. The committee is working on several pieces of legislation that would assist states with abuse prevention and treatment and prosecution of those responsible for the recent spike in heroin and perscription drug overdose deaths. (Photo by Chip Somodevilla/Getty Images)
PORTSMOUTH, NH - FEBRUARY 04: Republican presidential hopeful Donald Trump speaks at a rally at Great Bay Community College on February 4, 2016 in Portsmouth, New Hampshire. New Hampshire's primary is next Tuesday, February 9, 2016. (Photo by Andrew Burton/Getty Images)
WASHINGTON, DC - SEPTEMBER 10: U.S. Sen. Ted Cruz (R-TX) (L) and Sen. Rand Paul (R-KY) wait to speak at the "Exempt America from Obamacare" rally, on Capitol Hill, September 10, 2013 in Washington, DC. Some conservative lawmakers are making a push to try to defund the health care law as part of the debates over the budget and funding the federal government. (Photo by Drew Angerer/Getty Images)
Republican presidential candidate Sen. Ted Cruz (R-TX) speaks to supporters as he attends a caucus night gathering at the Iowa State Fairgrounds on February 1, 2016 in Des Moines, Iowa.
