WASHINGTON (AP) — The Latest on the US presidential campaign (all times local):

10:50 a.m.

President Barack Obama and the woman who wants to succeed him are making their first campaign appearance together next week.

Obama and Democrat Hillary Clinton, who was his secretary of state, are campaigning together Tuesday in Charlotte, North Carolina. That's a swing state that Obama won in 2008 but lost in 2012. Democrats dearly want to take North Carolina in the November election, when Clinton is likely to run against Republican Donald Trump.

North Carolina is home to 15 electoral votes. A candidate needs 270 to win the presidency.

Clinton's campaign said in a statement Tuesday that she and Obama will discuss their vision "for an American that is stronger together."

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10:25 a.m.

Donald Trump is firing back at the U.S. Chamber of Commerce, which says his trade plans could damage the U.S. economy.

Trump, in a tweet Wednesday, said the Chamber "must fight harder for the American worker. China, and many others, are taking advantage of U.S. with our terrible trade pacts."

In a speech Tuesday, Trump said he would tear up U.S. trade deals. He threatened new tariffs and called for a new era of economic "Americanism."

The Chamber, a traditional Republican ally, said his proposals would lead to higher prices, fewer jobs and a weaker economy.

In another tweet Wednesday, Trump said: "Why would the USChamber be upset by the fact that I want to negotiate better and stronger trade deals or that I want penalties for cheaters?"

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7:15 a.m.

Sen. Bernie Sanders is arguing that "the global economy is not working for the majority of people in our country and the world."

Sanders, who hasn't yet abandoned his presidential campaign, writes in a New York Times op-ed Wednesday that Republican Donald Trump "could benefit from the same forces" that led Britain to vote to leave the European Union. He says that any political advantage flowing to Trump from this market-moving vote "should sound an alarm for the Democratic Party."

Sanders hasn't conceded the Democratic nomination to Hillary Clinton, although he has said he would vote for her.

In his Times article, Sanders said that American voters, like those who supported bolting the EU, "are understandably angry and frustrated by the economic forces that are destroying the middle class."