Former President George W. Bush holds an event at his presidential library and museum in Dallas on Feb. 28 for his exhibit of veterans portraits. In interviews about his artwork, Bush has been commenting on the current administration. Laura Buckman/AFP/Getty Images hide caption

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Laura Buckman/AFP/Getty Images

Festivalgoers browse for books during the Miami Book Fair International. PBS will provide live coverage of the fair's events over the course of three days this year. Roberto Schmidt/AFP/Getty Images hide caption

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Roberto Schmidt/AFP/Getty Images

Before talking about the situation in Iraq, President Obama bantered with (from left to right) Senate Minority Leader Mitch McConnell, House Speaker John Boehner, Senate Majority Leader Harry Reid and House Minority Leader Nancy Pelosi. Pablo Martinez Monsivais/AP hide caption

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Pablo Martinez Monsivais/AP

President Obama walks from the White House to Marine One on Friday. In an interview Thursday with NBC News, he apologized for breaking a promise regarding the Affordable Care Act. J. Scott Applewhite/AP hide caption

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J. Scott Applewhite/AP

Former President George W. Bush speaks alongside former first lady Laura Bush during the opening ceremony of the George W. Bush Presidential Library and Museum on Thursday in Dallas. Kevork Djansezian/Getty Images hide caption

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Kevork Djansezian/Getty Images

President Barack Obama gestures toward former President George W. Bush, former first lady Laura Bush and first lady Michelle Obama, at the White House in Washington, Thursday, during a ceremony where the Bushs' portraits were unveiled. Charles Dharapak/AP hide caption

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Charles Dharapak/AP