"There is only one logical explanation for Mr. Trump's refusal to release his returns: there is a bombshell in them," Romney said.
A man identified as a white nationalist leader was listed as a Trump delegate. The campaign wanted him removed, but a spokesman for California's secretary of state's office say it's too late.
Donald Trump has a vice presidential search in full motion, and the names being discussed reveal some weaknesses the apparent GOP nominee is looking to shore up on his ticket.
House Speaker Paul Ryan says he is unable, right now, to support the Republican Party's de facto nominee Donald Trump. This has put him in direct conflict with some members of the congressional GOP who do support Trump. Ryan and Trump will meet Thursday and attempt to mend fences.
Presidential candidates have been confronted by voters over the crisis of opioid abuse and heroin addiction. One major problem is accessing treatment when someone who needs it is ready to receive it.
James Comey says he is closely watching the Bureau's investigation of Hillary Clinton's e-mails "to make sure it's being done well."
Renee Montagne talks to Bernie Sanders supporter Charles Chamberlain, executive director of Democracy for America, about the results of the West Virginia primary, and what's ahead for Sanders.
Donald Trump won GOP primaries in West Virginia and Nebraska. Democrats went to the polls in Nebraska, but they awarded convention delegates back in March. Sanders won the West Virginia primary.
How divided are Republicans about the rise of Donald Trump as their presidential nominee? Are moderate GOP voters in the swing state of Colorado rallying behind the billionaire?
David Greene talks to Democratic pollster Mo Elleithee of Georgetown University's Institute of Politics and Public Service, and Republican John Feehery, President of QGA Public Affairs, for analysis.
The Mountaineer State played to many of Sanders strengths — it's a heavily white, working class state where voters were angry about the Obama administration's policies.
The fallout continues after the tech website Gizmodo published an article on Monday alleging that Facebook wasn't just relying on algorithms to identify trending topics on the social media platform.
Voters in West Virginia and Nebraska are heading to the polls Tuesday in the presidential primary contests.
NPR's Robert Siegel talks with Hubbard Broadcasting CEO and GOP donor Stan Hubbard about his backing of Donald Trump's presidential campaign. The broadcasting executive once donated money to stop Trump from clinching the nomination. Now, he's saying he is supporting Trump.
In light of President Obama's announcement that he will visit Hiroshima later this month, NPR's Ari Shapiro talks with Dartmouth professor Jennifer Lind about the significance of the visit.
A former Facebook employee claims the social networking site censors news from conservative sources in its trending news section, according to a story in Gawker's Gizmodo blog.
Some applauded the president's speech at the historic black university as a break from "respectability politics" that demean African-Americans. Other saw it as more of the same.
Some experts say Trump's talk about women is not about women but a veiled message directed at men: They need to band together to stop Hillary Clinton.
David Padilla is adjusting to life back home in Northeast Philadelphia. After nearly 20 years in prison, he won clemency last year, freeing him from two life sentences for nonviolent drug crimes.
The HIPPY program, based on home visits, teaches parents to be their children's first teachers.