FILE - In this March 20, 2015, file photo, Sen., Rand Paul, R-Ky. speaks in Manchester, N.H. Ready to enter the Republican chase for the party's presidential nomination this week, the first-term Kentucky senator has designs on changing how Republicans go about getting elected to the White House and how they govern once there. Paul will do so with an approach to politics that is often downbeat and usually dour, which just might work in a nation deeply frustrated with Washington. (AP Photo/Jim Cole, File)