In Pictures: Michelle Obama in Haiti and Mexico
In Pictures: Obama's Asia trip
In Pictures: Inside President Obama's White House
In Pictures: Obama prays
In Pictures: Obama family vacations
In Pictures: President Obama in Afghanistan
President Barack Obama is seen on video screens as he speaks at the National Prayer Breakfast in Washington, on Feb. 5, 2009. President Obama offered a detailed glimpse into the role of prayer in his life during a speech at the annual National Prayer Breakfast on Feb. 3. Charles Dharapak/AP/File
From left, First Lady Michelle Obama, President Barack Obama, Vice President Joe Biden, his wife Jill Biden, former President Bill Clinton, and Secretary of State nominee Hillary Rodham Clinton attend the inaugural prayer service at the Washington National Cathedral in Washington, on Jan. 21, 2009. Jae C. Hong/AP/File
President Barack Obama bows his head in prayer prior to speaking at the University of Notre Dame during commencement ceremonies in South Bend, Indiana, on May 17, 2009.
Spain's Prime Minister Jose Luis Rodriguez Zapatero (l.-r.) and First Lady Michelle Obama clap as President Barack Obama waves during the National Prayer Breakfast in Washington on Feb. 4, 2010. Jason Reed/Reuters/File
President Barack Obama and First Lady Michelle Obama attend the funeral Mass for Jean Biden, mother of Vice President Joe Biden, on Jan. 12, 2010, at the Immaculate Heart of Mary Catholic Church in Wilmington, Del. Susan Walsh/AP/File
President Barack Obama and First Lady Michelle Obama bid farewell to Rev. Luis Leon after attending a Sunday morning church service at St. John's Church in Washington on Oct. 11, 2009. Jonathan Ernst/Reuters/File
Democratic presidential candidate Sen. Barack Obama speaks during the African Methodist Episcopal Church's 48th Quadrennial Session General Conference on July 5, 2008, in St. Louis. Jeff Roberson/AP/File
Democratic presidential candidate Sen. Barack Obama waves as he finishes speaking at the Apostolic Church of God service about fatherhood in Chicago, on June 15, 2008. Alex Brandon/AP/File
Democratic Senate candidate Barack Obama holds hands with church members and prays during services at Trinity United Church of Christ on Oct. 31, 2004, in Chicago. Nam Y. Huh/AP/File
Democratic presidential hopeful Sen. Barack Obama, of Illinois, addresses the biennial General Synod meeting of the United Church of Christ, on June 23, 2007, in Hartford, Conn. George Ruhe/AP/File
Barack Obama, then Democratic senatorial candidate, prays during services at Trinity United Church of Christ in Chicago in this Oct. 31, 2004 file photo. Nam Y. Huh/AP/File
In Pictures: Derby Day devotees, Kenyan style
Photos of the Day: Photos of the day 05/16
In Pictures: Dazzle like Beckham
In Pictures: Weather extremes 2013
Photos of the Day: Photos of the day 05/15
In Pictures: Duchess Kate's royal baby bump
Photos of the Day: Photos of the day 05/14
In Pictures: Keffiyeh is rebel chic
National Day of Prayer activities may have more political undertones than usual this year, as religious groups take aim at what they see as President Obama's attacks on religious freedom.
"One Nation Under God." That line, enshrined in the American Pledge of Allegiance, is the theme selected by a self-appointed "task force" that seeks to set an agenda for Thursday prayer events around the country.
/Photo-Galleries/In-Pictures/Derby-Day-devotees-Kenyan-style
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-16
/Photo-Galleries/In-Pictures/Dazzle-like-Beckham
/Photo-Galleries/In-Pictures/Weather-extremes-2013
/Photo-Galleries/In-Pictures/Covert-commerce-smugglers-tunnels-at-the-Egypt-and-Gaza-border
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-15
/Photo-Galleries/In-Pictures/Duchess-Kate-s-royal-baby-bump
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-14
/Photo-Galleries/In-Pictures/Keffiyeh-is-rebel-chic
/Photo-Galleries/CSM-Galleries/Election2012/Tea-Parties
/Photo-Galleries/In-Pictures/Latin-America-s-fight-against-drugs-and-violence
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-13
/Photo-Galleries/In-Pictures/Look-up!-The-wonders-of-modern-architecture
/Photo-Galleries/In-Pictures/Exclusive!-with-Barbara-Walters
/Photo-Galleries/In-Pictures/Space-Photos-of-the-Day/Exploring-Mars-with-Curiosity
/Photo-Galleries/In-Pictures/A-chance-to-pray-at-the-Western-Wall
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-09
/Photo-Galleries/In-Pictures/Making-it-in-Japan
/Photo-Galleries/In-Pictures/Mothers-of-the-world
/Photo-Galleries/In-Pictures/What-happened-at-the-US-Consulate-in-Libya
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-08
/Photo-Galleries/In-Pictures/Istanbul-A-tale-of-two-cities
/Photo-Galleries/In-Pictures/Pakistan-caught-between-ancient-and-modern-life
/Photo-Galleries/In-Pictures/Russians-vs.-Putin
/Photo-Galleries/In-Pictures/Africa-s-Hot-Spots
/Photo-Galleries/Photos-of-the-Day/2013/Photos-of-the-day-05-07
/Photo-Galleries/In-Pictures/France-matters
/Photo-Galleries/In-Pictures/Bugged-in-Biblical-Proportions
/Photo-Galleries/In-Pictures/Neo-nazis-nationalists-and-right-wing-extremists
/Photo-Galleries/In-Pictures/Learning-from-the-Boston-Marathon-bombings