Rand Paul

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Sen. Rand Paul, Kentucky Republican, is under fire from the NRA due to his support of the NAGR, a rival gun rights advocacy group. (Associated Press)

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hired gun: Sen. Rand Paul, Kentucky Republican, is under fire from the NRA due to his support of the NAGR, a rival gun rights advocacy group. (Associated Press)

Mike Huckabee lectured Sen. Rand Paul on Thursday about how running for president is "the big leagues," following the Republican's testy exchange with "Today" co-host Savannah Guthrie. (Fox News via Politico)

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"When the founders of New Hampshire came up with motto: 'Live free or die,' they didn't leave a lot of wiggle room," Sen. Rand Paul, Kentucky Republican, told nearly 350 local citizens in Milford, New Hampshire as he officially opened his Republican presidential nomination campaign Wednesday. (Associated Press)

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New Hampshire voters will get their first view of the latest officially announced Republican 2016 candidate Wednesday, when Sen. Rand Paul of Kentucky arrives, and they are already sizing him up as a potential threat to Jeb Bush. (Associated Press)

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Sen. Rand Paul joins Sen. Ted Cruz as the first two major announced Republican candidates. (Associated Press) ** FILE **

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Sen. Rand Paul, R-Ky., announces the start of his presidential campaign, Tuesday, April 7, 2015, at the Galt House Hotel in Louisville, Ky. (AP Photo/Carolyn Kaster)

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Sen. Rand Paul, R-Ky., joined by his wife, Kelley Ashby, arrives to announce the start of his presidential campaign, Tuesday, April 7, 2015, at the Galt House Hotel in Louisville, Ky. (AP Photo/Carolyn Kaster) ** FILE **

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National Edition News cover for April 7, 2015 - Rand Paul begins quest for White House: Sen., Rand Paul, R-Ky. speaks to employees during a visit to Dyn, an internet performance company Friday, March 20, 2015, in Manchester, N.H. (AP Photo/Jim Cole)

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Sen. Rand Paul, Kentucky Republican, is set to follow in the footsteps of his father, former Rep. Ron Paul, in making a White House bid. (Associated Press)

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homegrown: Sen. Rand Paul, Kentucky Republican, is set to follow in the footsteps of his father, former Rep. Ron Paul, in making a White House bid. (Associated Press)

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Sen., Rand Paul, R-Ky., speaks in Manchester, N.H., in this March 20, 2015, file photo. (AP Photo/Jim Cole, File)

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Sen. Rand Paul will strike a distinctly presidential pose when he announces his 2016 intentions on Tuesday. (Associated Press)

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Sen. Rand Paul's wife, Kelly, will be with him at the Louisville opener and may join him at other stops on the five-day, five-state launch. (Associated Press)

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National Edition News cover for March 23, 2015 - Cruz, Paul to start GOP presidential race: FILE - In this July 16, 2013 file photo Republican Sens. Rand Paul of Kentucky, and Ted Cruz of Texas take part in a news conference on Capitol Hill in Washington. About two months ago Republican Sen. John McCain of Arizona likened Cruz and Paul, and others to "wacko birds" for their style of confrontational politics. Paul responded to the party's 2008 presidential candidate and 5th term senator by saying, "The GOP of old has grown stale and moss-covered. I don't think we need to name any names, do we?" (AP Photo/Charles Dharapak, File)

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Sen. Ted Cruz of Texas (right) announced his candidacy for the White House on Monday, and fellow Sen. Rand Paul is planning an ambitious five-state, five-day rollout of his own starting April 7 in his home state of Kentucky. (Associated Press)

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Sen. Rand Paul, R-Ky., and Sen. Ted Cruz, R-Texas listen as Sen. Kirsten Gillibrand, D-N.Y., 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)

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Sen., Rand Paul, R-Ky. speaks to employees during a visit to Dyn, an internet performance company Friday, March 20, 2015, in Manchester, N.H. (AP Photo/Jim Cole)