Wisconsin Supreme Court Justice Michael Gableman is being considered for a job in the Trump White House, although it is not clear which position he is being considered for.

The Milwaukee Journal Sentinel reported Wednesday that, according to multiple sources, FBI agents had been interviewing associates and colleagues of the jurist, a preliminary step in hiring someone for a top administrative position. Gableman, who declined to comment, announced in June that he would retire from the bench when his term expires next year.

Gableman is known as a conservative. He wrote the opinion upholding Republican Gov. Scott Walker's 2011 changes to the state's public-sector union rules. He was part of the majority that upheld Wisconsin's voter ID law in 2014. He wrote the 2015 majority opinion that Walker did not violate campaign finance laws during his recall election in 2011 and his 2012 re-election. Gableman slammed the case against Walker as using "theories of law that do not exist in order to investigate citizens who were wholly innocent of any wrongdoing."

Should Gableman take a position with the White House, Walker would be able to appoint his successor. The jurist's seat is up for election next year.