An aide to Vice President Kamala Harris' campaign provided more details about the vice president's planned visit to the border in Arizona on Friday.

Harris will visit the border city of Douglas, and deliver remarks on border security, according to the aide. She will also talk about her intention to introduce a tough bipartisan border security plan and criticize former President Donald Trump for killing the one introduced over the summer.

-ABC News' Gabriella Abdul Hakim, Fritz Farrow and Will McDuffie

Vice President Kamala Harris released her roughly 80-page economic policy book on Wednesday and outlined it in a speech in Pittsburgh.

Harris spoke at the Economic Club of Pittsburgh and framed her proposals into three pillars: "lowering costs, investing in American innovation and leading the world in industries of tomorrow."

She also highlighted her plans for American manufacturing.

"The simple truth is, in America, it takes too long and it costs too much to build. Whether it's a new housing development, a new factory or a new bridge, projects take too long to go from concept to reality," Harris said. "It happens in blue states, it happens in red states, and it's a national problem. And I will tell you this, China is not moving slowly. They're not, and we can't afford to either. If we are to compete, we can't afford to either."

She attacked former President Donald Trump's record, calling him "one of the biggest losers ever on manufacturing."

"Just yesterday, he went out and promised to bring back manufacturing jobs. And if that sounds familiar, it should, in 2016 he went out and made that very same promise about the Carrier plant in Indianapolis," she said.

"You'll remember, Carrier then offshored hundreds of jobs to Mexico under his watch. And it wasn't just there. On Trump's watch, offshoring went up and manufacturing jobs went down across our country and across our economy."

-ABC News' Fritz Farrow, Will McDuffie and Gabriella Abdul-Hakim

Harris drew contrasts between her economic agenda and that of her opponent, Trump, in a speech in the battleground state of Pennsylvania.

Harris told an audience at the Economic Club of Pittsburgh that her economic philosophy is "rooted in her middle-class upbringing" while Trump's comes from a "gilded path to wealth."

"For Donald Trump, our economy works best if it works for those who own the big skyscrapers. Not those who build them. Not those who wire them. Not those who mop the floors," she said.

Harris has made the economy and the cost of living a focal point of her campaign in recent weeks.

To allow the middle class to be the "growth engine of our economy," Harris said she would cut taxes for middle class families and individuals, promising that more than 100 million Americans would get a middle-class tax break.

Read more here.

-ABC News' Fritz Farrow, Gabriella Abdul-Hakim, and Will McDuffie

Former President Donald Trump didn't mince words Wednesday at a rally in North Carolina following more reports from security officials that Iran has been plotting to assassinate him.

The Office of the Director of National Intelligence met with Trump and his campaign Tuesday, according to a spokesman for DNI. While the agency declined to discuss specifics about the meeting, the former president's campaign said the meeting involved "real and specific threats from Iran to assassinate him in an effort to destabilize and sow chaos in the United States."

During his rally in Mint Hill, North Carolina, Trump echoed that statement and sent a stark warning to the country.

"If I were the president, I would inform the threatening country, in this case, Iran, that if you do anything to harm this person, we are going to blow your largest cities and the country itself to smithereens. We're going to blow it to smithereens," the former president said to cheers. "There would be no more threats."

Read more here.