"We are going to bring back jobs to America, and we are going to bring back jobs to MI".
Hillary Clinton has also called for a review of NAFTA.
Trump aimed to build on that Friday in Dimondale - which is almost 93 percent white.
"I like what he's saying".
Mr Trump has suffered from depressing support among African Americans.
"Just imagine how many more jobs will be lost", he said. "He's honest. That's important".
"I think that goes back to the status quo".
Trump's remarks, however, seemed somewhat out of place, given that he was delivering it in a hall outside Lansing, halfway across the state from the Detroit. "We're ready for a new president, ready for change, ready to get rid of the status quo".
He also predicted that "at the end of four years, I guarantee you that I will get over 95 percent of the African-American vote".
Teresa Pierce of Fulton Township, who was holding a sign reading "Border wall construction crew - ready to work", said she doesn't feel the country is working for her anymore. Trump promised to reverse the trend of, from his perspective, outward-going jobs across the country. But the Battle Creek man said he was reserving judgement until after he heard Trump speak. Never mind that he is whistling in the wind and nobody will hear him, in particular, the African-American community.
The GOP nominee announced that he'd accepted campaign chairman Paul Manafort's resignation earlier in the day, amid revelations of Manafort's alleged involvement with a pro-Russian political party in Ukraine.
Susan Belskus said she felt better knowing she was able to voice her concerns at the rally. "The main thing is that he's going to tell the truth, even if it's an bad truth".
Trump delivered the message in front of a mostly white crowd.
Speaking at a rally in Dimondale, Michigan, Trump argued that Democrats, including his rival Hillary Clinton, have taken advantage of African American voters and their votes for granted.
He has about 2 percent support from black voters, according to an average of several polls last week.
"If you keep voting for the same people, you will keep getting exactly the same result", he said.
When Barack Obama won reelection in 2012, 93 percent of black Americans thought he was doing a good job as president.
"We are against Trump", Marinaro said. "He's not a politician".
- Donald Trump is telling African American voters to give him a shot at the presidency.
But Pearce got into the spirit of the crowd.
As he waited in line Friday afternoon, William Humphreys wore a cap with Trump's slogan "Make America great again".