Ronald Reagan, receiving applause prior to making his State of the Union Address in 1983, and George H.W. Bush and George W. Bush led the pack of 44 presidents in terms of frequency of mentioning God in their address to Congress. (AP Photo/Bob Daugherty, File)
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ATLANTIC OCEAN (Jan. 31, 2011) A Sailor assigned to the air department aboard the aircraft carrier USS George H.W. Bush (CVN 77) watches an F/A-18E Super Hornet from Strike Fighter Squadron (VFA) 31 take off. George H.W. Bush is in the Atlantic Ocean conducting a composite training unit exercise. (U.S. Navy photo by Mass Communication Specialist 3rd Class Tony Curtis/Released)
Former President George H.W. Bush is introduced during the first half of an NCAA college basketball game between Duke and North Carolina State at Cameron Indoor Stadium in Durham, N.C., Saturday, Jan. 18, 2014. (AP Photo/Gerry Broome)
Former President George H.W. Bush, right, and his wife Barbara during the fourth inning of a Major League Baseball game Saturday, April 18, 2009 in Houston. (AP Photo/David J. Phillip)
President George W. Bush, left, Barbara Bush, center, and former President George H.W. Bush, right, stand during a commencement ceremony at Texas A&M University on Friday, Dec. 12, 2008, in College Station, Texas. (AP Photo/Evan Vucci)
Former President George H.W. Bush and former first lady Barbara Bush listen as, President Bush, accepts the party nomination at the Republican National Convention Thursday, Sept.2, 2004, in New York. (AP Photo/Paul Sancya)
Rep. George H.W. Bush, R-Texas., who is seeking a seat in U.S. Senate, talks with a group of young people at a rally in Houston, Texas., on Oct. 9, 1970. Bush is opposed by Lloyd Bentsen, wealthy Houston businessman, who defeated Sen. Ralph Yarborough in the State Democratic Primary. (AP Photo)
Both President Barack Obama and fromer President George H.W. Bush, right, talk after speaking at the Points of Light Institute forum at Texas A&M University in College Station, Texas, Friday, Oct. 16, 2009. (AP Photo/Gerald Herbert)
President George H.W. Bush tells reporters he feels relaxed after four weeks vacation in Kennebunkport, Maine on Sept. 2, 1991, despite the historic events which have occurred. Bush made the comments at the end of a press conference in which he announced that the U.S. will recognize Baltic independence. (AP Photo/Doug Mills)
President George H.W. Bush follows his dog Ranger as he starts out jogging on Thursday, Feb. 15, 1991 afternoon in Washington when the temperatures reached the mid-fifties. Bush will travel to Andover, Mass, Friday to visit a plant that makes the Patriot missile. A Secret Service agent follows Bush. (AP Photo/Dennis Cook)
Pope John Paul II presents first lady Barbara Bush with a Vatican Medal as President George H.W. Bush looks at his medal during a ceremony at the Vatican, as seen in a photo from Saturday evening, May 27, 1989. (AP Photo/Ron Edmonds)
President George H.W. Bush waves as he leaves the White House on Friday, May 6, 1989 in Washington for a flight to Rome. He will also visit England, West Germany and Brussels, Belgium for a NATO summit. He is also slated to have an audience with pope. (AP Photo/Barry Thumma)
President George H.W. Bush and wife, Barbara dance at the inaugural ball at the Pension Building in Washington, on Friday, Jan. 20, 1989. (AP Photo/Scott Applewhite)
George H.W. Bush, right, receives manuscript of “The Babe Ruth Story” from Ruth during ceremony on Yale’s baseball field in West Haven, Ct., in 1948. (AP Photo)
President-elect Barack Obama is welcomed by President George W. Bush for a meeting at the White House in Washington, Wednesday, Jan. 7, 2009, with former presidents, from left, George H.W. Bush, Bill Clinton and Jimmy Carter. (AP Photo/J. Scott Applewhite)