Obama proposes changes to curb gun violence, North Korea claims h-bomb test and Donald Trump takes aim at Clinton and Cruz

Republicans debate Cruz's eligibility to be president, Bernie Sanders and Hillary Clinton are neck-and-neck and Obama's final year agenda.

Trump and Sanders gaining momentum, SCOTUS to decide on halt of deportations and Washington Post reporter released from Iran

Republicans debate but Donald Trump skips out while Democrats Hillary Clinton and Bernie Sanders are in a dead heat.

Hillary Clinton and Bernie Sanders debate one-on-one. Republican race shakes up after Iowa.

We examine the state of the 2016 presidential campaign from the site of the PBS NewsHour debate in Milwaukee, Wisconsin.

The sudden death of Justice Scalia sets off an uproar about who should nominate his successor.

Trump marches to the Republican presidential nomination while his opponents up their attacks.

Donald Trump marches to the GOP nomination as party leaders try to stop his rise.

Rubio and Kasich face critical home state tests in Florida and Ohio.

Senate Republicans refuse to consider Obama's latest Supreme Court nominee.

After attacks in Brussels, the United States renewed its fight against the Islamic State.

Donald Trump faced criticism for comments on abortion, foreign policy and nuclear weapons.

The 2016 race for the White House shifts to New York, and candidates start counting delegates.

Republican and Democratic White House hopefuls descend on New York ahead of Tuesday's primary.

Donald Trump and Hillary Clinton solidify their front-runner status after convincing wins in New York.

As the election shifts to Indiana, Clinton and Trump widen their leads and are headed to a general election showdown.

The presumptive Republican nominee Donald Trump will meet with Congressional Republicans to unify the GOP.

Can the Republican Party unite before November? Can Hillary Clinton turn her focus to Trump?

Hillary Clinton and Bernie Sanders continuing to fight for the Democratic nomination while Donald Trump shores up Republican support.

Donald Trump surpassed the 1,237 delegates needed to clinch the Republican nomination while Hillary Clinton continues to deal with fallout over her private email server.

The stakes are high for Clinton, Sanders and Trump heading into the California primary.

Hillary Clinton makes history, Bernie Sanders keeps fighting and Donald Trump takes fire

The deadliest mass shooting in U.S. history has sparked a debate on guns and terrorism.

While Britain throws Europe into uncertainty by voting to leave the EU, the U.S. Supreme Court decides on affirmative action and immigration, and House Democrats stage a sit-in over gun control legislation.

Donald Trump and Hillary Clinton start the search for VPs, terror breaks out at the Istanbul airport, and SCOTUS leans left on a historic abortion ruling.

3 officer-involved shootings shock the country, Clinton will not be charged in email probe

As the Republican National Convention is about to kickoff, Donald Trump names a VP.

Days before the Democrats meet in Philadelphia, Hillary Clinton prepares to name her VP.

Democrats attack Trump's credibility during nominating convention.