Republican presidential nominee Donald Trump on Friday named an economic advisory group that includes Steve Roth, Harold Hamm, and Tom Barrack.

The announcement comes ahead of a speech Monday to the Detroit Economic Club that could help Trump re-focus his campaign after a string of feuds and missteps was capped Thursday by post-convention polls showing him trailing Democratic nominee Hillary Clinton.

Trump in the speech will reveal "his policy agenda for revitalizing the American economy," according to a statement from his campaign. "Mr. Trump’s speech will focus on empowering Americans by freeing up the necessary tools for everyone to gain economically. It will stand in stark contrast to Clinton’s same, stale big government policy prescriptions that have choked economic growth in America and led to over 40 years of wage stagnation."

Trump will be "broadening" the economic plan he has already offered and deal with tax cuts, "tax repatriation," and deregulation, campaign chairman Paul Manafort said on Fox News.

Other economic advisers, according to the Trump campaign, will include Steven Mnuchin, Howard Lorber, Stephen M. Calk, John Paulson, Andy Beal, Steve Feinberg, David Malpass, Peter Navarro, Stephen Moore, and Dan DiMicco. The campaign, which didn’t name any women, said more members of the group would be added later.

The campaign’s national policy director is Stephen Miller and its deputy policy director is Dan Kowolski, according to the announcement.

Trump turned to supporters in the real-estate industry, including Vector Group’s Lorber and Vornado Realty Trust’s Roth, as he ramped up his fundraising operation after the Republican presidential primary.

Mnuchin, the CEO of Dune Capital Management and a former Goldman Sachs executive, became Trump’s national finance chairman in May. Barrack, the billionaire founder of Colony Capital, is a longtime friend of Trump’s who spoke on his behalf at the Republican National Convention in Cleveland last month.

Hamm, the billionaire CEO of Continental Resources Inc, has praised Trump for his unconventional campaign and for his plan to curb immigration that Trump says poses a terrorism threat to the U.S.

Moore has advised the Trump campaign on its tax plan. Navarro and DiMicco have offered advice on trade.

“Bad trade deals are at the heart of America’s economic malaise," Navarro said in a recent interview with Bloomberg. "Trump knows that in order for the global economy to prosper, we need to trade freely. But he’s not going to stand, for a second, cheating.”