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LOUISVILLE, KY - APRIL 7:  Sen. Rand Paul (R-KY) delivers remarks while announcing his candidacy for the Republican presidential nomination during an event at the Galt House Hotel on April 7, 2015 in Louisville, Kentucky. Originally an ophthalmologist, Paul rode the Tea Party wave to office in 2010. (Photo by Luke Sharrett/Getty Images)
LOUISVILLE, KY - APRIL 7:  Sen. Rand Paul (R-KY) delivers remarks while announcing his candidacy for the Republican presidential nomination during an event at the Galt House Hotel on April 7, 2015 in Louisville, Kentucky. Originally an ophthalmologist, Paul rode the Tea Party wave to office in 2010. (Photo by Luke Sharrett/Getty Images)

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    Sen. Rand Paul running for president

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Sen. Rand Paul running for president

Republican Senator Rand Paul from Kentucky announced he will run for president in 2016. CNN's Dana Bash has more.

Sen. Rand Paul running for president

Republican Senator Rand Paul from Kentucky announced he will run for president in 2016. CNN's Dana Bash has more.