U.S. President Barack Obama and first lady Michelle Obama walk through a gate in the Columbia Parc Development to visit newly built homes in New Orleans, Louisiana, August 29, 2010. REUTERS/Jim Young (UNITED STATES - Tags: POLITICS IMAGES OF THE DAY) 

U.S. President Barack Obama holds an umbrella for Senior Advisor Valerie Jarrett (C) and Deputy Chief of Staff Anita Breckenridge (L) as they step from Marine One during a rain shower on the South Lawn of the White House in Washington May 18, 2015. REUTERS/Joshua Roberts 

U.S. President Barack Obama checks to see if he still needs the umbrella held by a U.S. Marine to protect him from the rain during a joint news conference with Turkish Prime Minister Recep Tayyip Erdogan in the Rose Garden of the White House in Washington, May 16, 2013. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS)

U.S. President Barack Obama wipes rain off his face during heavy rainfall at a campaign rally in Glen Allen, Virginia, July 14, 2012. Obama travelled to Virginia on Saturday for campaign events. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS ELECTIONS) 

U.S. President Barack Obama receives a kiss in the rain during a campaign rally in Cleveland, Ohio October 5, 2012.
REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS ELECTIONS USA PRESIDENTIAL ELECTION) 

U.S. President Barack Obama walks from Marine One in the rain at McGuire Air Force Base in New Jersey May 28, 2013. Obama and New Jersey Governor Chris Christie teamed up again on Tuesday to tour areas damaged by last year's Hurricane Sandy, giving a boost to a Democratic president enmeshed in scandals at home. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS TPX IMAGES OF THE DAY) 

U.S. Democratic presidential nominee Barack Obama speaks in pouring rain as U.S. Secret Service are pictured on a nearby roof during a rally at Widener University in Chester, Pennsylvania, October 28, 2008. Obama is campaigning in Pennsylvania and Virginia on Tuesday before the November 4 election. REUTERS/Jason Reed (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA) 

U.S. President Barack Obama boards Air Force One in the rain to return to Washington from Charlotte Air National Guard Base in Charlotte, North Carolina April 15, 2015. REUTERS/Jonathan Ernst 

U.S. President Barack Obama steps up onto the stage in the rain during a campaign rally in Glen Allen, Virginia, July 14, 2012. Obama travelled to Virginia on Saturday for campaign events. The white haze around Obama is caused by a fogged lens. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS ELECTIONS) 

Audience members use chairs to shelter from the rain as U.S. President Barack Obama speaks in the pouring rain during a Memorial Day event at the Abraham Lincoln National Cemetery in Elwood, Illinois, May 31, 2010. REUTERS/Larry Downing (UNITED STATES - Tags: POLITICS ANNIVERSARY IMAGES OF THE DAY) 

U.S. President Barack Obama wipes the rain off his face as he meets Pentagon staff and family members of the victims of the September 11 attacks on New York, Washington, and Pennsylvania during a ceremony marking the eighth anniversary at the Pentagon near Washington, September 11, 2009. REUTERS/Jim Young (UNITED STATES POLITICS ANNIVERSARY CONFLICT) 

U.S. President Barack Obama walks towards Air Force One at John F. Kennedy Airport in New York September 16, 2010. REUTERS/Jim Young (UNITED STATES - Tags: POLITICS IMAGES OF THE DAY) 

U.S. President Barack Obama pulls up his collar as he arrives in the rain with first lady Michelle Obama to attend the Republic Day parade in New Delhi January 26, 2015. REUTERS/Jim Bourg (INDIA - Tags: POLITICS) 

U.S. President Barack Obama wipes water off his face during a rain shower at a campaign rally in Glen Allen, Virginia, July 14, 2012. Obama travelled to Virginia on Saturday for campaign events. Rain drops on the lens created the highlights in the image. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS ELECTIONS)