Marco Rubio celebrates onstage with his family in 2010 after winning his U.S. Senate seat in Florida when he was just 39 years old. Now, he's expected to embark on a run for president. Alan Diaz/AP hide caption

itoggle caption Alan Diaz/AP

President Obama with Israeli Prime Minister Benjamin Netanyahu at the White House in 2013. The two have never had a warm and fuzzy relationship. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP