A review panel says changes are needed at the Secret Service — along with a better fence at the White House. Here, members of the Secret Service Uniformed Division stand in front of the White House. Kevin Dietsch/UPI /Landov hide caption

itoggle caption Kevin Dietsch/UPI /Landov

Navy Petty Officer Jimmy Dial (left) sits with his daughter, Kimberly, beside U.S. Army soldier Henri Blandon and his daughter as the men's wives and the girls' mothers become U.S. citizens at a naturalization ceremony last month in Ontario, Calif. Nick Ut/AP hide caption

itoggle caption Nick Ut/AP

Cuban President Fidel Castro (left) and Venezuelan President Hugo Chavez in Barinas, Venezuela, in 2000. The two formed a close partnership, which has continued with their successors. However, the prospect of normal ties between the U.S. and Cuba may also have an impact on relations between Cuba and Venezuela. Jose Goitia/AP hide caption

itoggle caption Jose Goitia/AP

Obama shakes hands with Castro during a memorial service for former South African President Nelson Mandela in Soweto, South Africa, on Dec. 10, 2013. Former Cuban leader Fidel Castro says his brother introduced himself to Obama in English, telling him, "Mr. President, I'm Castro," as the two leaders shook hands. AP hide caption

itoggle caption AP

Markus Kaarma waits to be dismissed during an afternoon break in Missoula County Court in Missoula, Mont., in this Dec. 5 photo. A jury found Kaarma guilty Wednesday of deliberate homicide in the shooting death of a German high school exchange student who entered his garage. Arthur Mouratidis/Reuters /Landov hide caption

itoggle caption Arthur Mouratidis/Reuters /Landov