Trump promises prosperity for Mich.

NOVI, Mich. — Blistering his Democratic opponent as a tool of Wall Street and special interests, Republican Donald Trump promised economically hard-hit Michigan supporters a return to prosperity under a Trump administration in a large rally Friday night.

“The special interests that shipped your jobs out of the country, they’re donating to Hillary Clinton,” Mr. Trump shouted to an estimated 7,000 people inside the Suburban Collection Showplace.

To the cheering crowd, Mr. Trump promised to rebuild the domestic auto industry — which set an alltime sales record in 2015 — “like you’ve never seen it before.” He also promised to rebuild the military, to “keep radical Islamic terrorists the hell out of our country,” to rebuild Detroit, to provide the biggest tax cut since Ronald Reagan was president, to take care of steel workers and miners, and to bring back jobs lost to other countries.

Mr. Trump, a self-described billionaire businessman from New York who has never held or sought public office in his life, didn’t offer a blueprint for how he would accomplish his goals for the country. He attacked his opponent over her email scandal, challenging her to promise not to offer jobs in her administration to five staffers who were given immunity from prosecution.

Mr. Trump also called on President Barack Obama to refuse to pardon Ms. Clinton and her associates, even though they have not been charged with any crimes, let alone convicted of any crimes. “No one is above the law,” he said.

After Richard Nixon resigned in 1974, President Gerald Ford issued a full pardon for his involvement in the Watergate scandal, for which Nixon was never indicted.

Mr. Trump used the visit to triumphantly announce that the Presidential Debate Commission agreed there were problems with his audio at the debate. The commission released a one-sentence statement Friday that said there “were issues regarding Donald Trump’s audio that affected the sound level in the debate hall.” But Mr. Trump said the commission announced that his “microphone was defective.”

“I mean, working that microphone was a hell of a lot more difficult than working crooked Hillary Clinton, that I can tell you,” he said.

“You know, when you have a situation like that, and you know it’s bad, and you think you have a hundred million people watching, what do you do? Stop the show? It was bad. I wonder why it was bad. Think of that. I wonder why it was bad. It was so bad.”