Scott Horsley

President Obama returns to the campaign trail to urge people to vote for Hillary Clinton in the crucial battleground state of Pennsylvania.

Their tax plans are mirror images, in some ways. Trump's plan calls for substantial cuts in tax rates with savings to the wealthiest households while sets out to raise taxes on the very wealthy.

Asked on cable news what he would do about Aleppo, the city at the center of the Syrian refugee crisis, Gary Johnson asked, "What is Aleppo?" It revealed a surprising lack of foreign policy depth and could cause problems for his candidacy as he seeks to try and make the presidential debate stage.

The former secretary of state under Republican George W. Bush used a personal computer connected to a private phone line to get around State Department servers.

While overseas before heading back to the U.S., the president warned that the GOP nominee, whom he derided as "uninformed" and having "wacky ideas," is being "normalized."

In response to the question "What would you do if you were elected, about Aleppo?" the Libertarian nominee did not recognize the war-torn Syrian city that has been a center of the refugee crisis.

Hillary Clinton unveiled a list of endorsements from 95 former military officers, a day after Donald Trump announced the support of 88 former generals and admirals.

Donald Trump brushed aside questions this week about the fine he paid over an improper contribution the Trump Foundation made to a political committee for Florida's attorney general.

President Obama spoke about his meeting with Russian President Vladimir Putin, the status of the Trans-Pacific Partnership, and the controversial protest by 49ers quarterback Colin Kaepernick, at the conclusion of the Group of 20 summit in China Monday.

An FBI report and notes of the bureau's interview with Hillary Clinton show she relied on agency officials to deal with classified information.

His proposed "great wall" gets all the attention. But his plan would mean record spending on top of what's already record spending on border enforcement.

NPR's politics team annotated Trump's speech on immigration, which comes after a week of seeming to change direction on the issue.

Hillary Clinton told the American Legion convention in Ohio the last thing America needs in Washington is more name calling. She slammed Republican rival Donald Trump for insulting Mexican immigrants.

As Donald Trump prepares to flesh out his immigration platform in a speech Wednesday, here are five things to know about how President Obama has gone about enforcing current immigration laws.

Republican presidential candidate Donald Trump suggests he may be shifting his position on one of the signature issues of his campaign: immigration.

President Obama travels to flood ravaged Baton Rouge, La., on Tuesday, just days after Republican presidential nominee Donald Trump paid a visit.

Aetna announced this week it's dropping out of Obamacare exchanges in 11 of the 15 states where the company has been competing. UnitedHealth and Humana are also scaling back their Obamacare business raising questions about the future of government run exchanges.

State Department officials say a $400 million cash payment to Iran was contingent on its release of U.S. prisoners. The revelation is fueling critics who say the White House paid ransom to Iran.

Donald Trump proposed "extreme vetting" for potential immigrants, saying the U.S. should only accept newcomers who share the country's values and respect its people. NPR looks at how that would work.

The Trump campaign is naming Breitbart News' Stephen Bannon as chief executive, and is also promoting pollster Kellyanne Conway to campaign manager. Paul Manafort will stay on as campaign chairman.