President Donald Trump was all set to hold a rally in Pennsylvania on Friday to celebrate a details-to-come deal for Japan-based Nippon Steel to invest in US Steel, which he says will keep the iconic American steelmaker under US-control.

Though Trump initially vowed to block the Japanese steelmaker’s bid to buy Pittsburgh-based US Steel, he changed course and announced an agreement last week for what he described as “partial ownership” by Nippon. It’s not clear, though, if the deal his has been finalised or how it would be structured. Trump stressed the deal would maintain American control of the storied company, which is seen as a political symbol and is also key to the country’s supply chain, industries like auto manufacturing and national security.

Trump, who has been eager to strike deals and announce new investments in the US since retaking the White House, is also trying to satisfy voters, including blue-collar workers, who elected him as he called to protect US manufacturing. US Steel has not publicly communicated any details of a revamped deal to investors. Nippon Steel issued a statement approving of the proposed “partnership” but also has not disclosed terms of the arrangement.