PHILADELPHIA, July 30 (Reuters) - Pennsylvania Governor

Josh Shapiro said on Tuesday that he cannot support Nippon

Steel's ( NISTF ) bid to buy U.S. Steel in its current form

because the United Steelworkers union is unhappy with the

merger.

Shapiro, who is a contender to be Vice President Kamala

Harris' Democratic Party running mate in the November U.S.

presidential election, said he was viewing the proposed merger

through its impact on workers.

"Speaking from a state perspective as governor, if the U.S.

steel workers aren't happy with this deal, which they are not,

I'm not happy with this deal," Shapiro said at an Internal

Revenue Service event attended by Treasury Secretary Janet

Yellen.

"If I don't see a future where U.S. Steel manufacturing

continues here in the Commonwealth of Pennsylvania, and is

expanding from what is happening right now, I'm not happy, so

I've got really serious concerns," he said.