Dan Senor, senior national security aide to Mitt Romney, speaks to the press en route to Israel from London on Saturday. Jason Reed/Reuters /Landov hide caption

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Ted Cruz, left, and David Dewhurst shake hands before their Republican Senate debate in Dallas on June 22. LM Otero/AP hide caption

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Peoria, Ill., as seen from across the Illinois River. Jeff Haynes/Reuters /Landov hide caption

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President Obama waves after speaking at a UPS facility in Las Vegas on Thursday. Nevada is one stop on the president's latest road trip focusing on the economy. Julie Jacobson/AP hide caption

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Mitt Romney, accompanied by Rep. Ileana Ros-Lehtinen, R-Fla. (third from right), campaigns Wednesday at a U.S.-Cuba Democracy Political Action Committee event at Miami-Dade College in Miami. Charles Dharapak/AP hide caption

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