The White House formally announced President Donald Trump’s intention to nominate Eugene Scalia for labor secretary Tuesday, over one month after the president floated his plans on Twitter.

Scalia is a Labor Department veteran who practices employment law in the Washington offices of Gibson Dunn & Crutcher. He is the son of the Supreme Court Justice Antonin Scalia.

The Scalia nomination has divided interest groups along familiar lines. The pro-business lobby appears generally supportive of the Scalia pick, while organized labor is wary.

“Gene Scalia is an excellent choice to serve as secretary of labor, especially as the department completes work on several critical rule makings,” said Glenn Spencer, the Chamber of Commerce’s senior vice president for employment policy. “He is whip smart and knows the department’s mission and operations well from prior service as solicitor. Together with Pat Pizzella, DOL is in good hands.”

Lee Saunders, president of the American Federations of State, County, and Municipal Employees (AFSCME) sounded a more cautious note.