The Austrian born Terminator star, 69, scaled back his acting career when he successfully ran to become California's governor in 2003, serving in the post until 2011.

Arnold has largely stayed out of politics since then, but recent high profile spats with America's new president Donald Trump sparked rumours he would like to return to the political frontline.

And when asked by, his spokesman Daniel Ketchell refused to rule out a 2018 run for a U.S. Senate seat.

"Right now Gov. Schwarzenegger's focus is on using his platform to bring some sensibility and coherency to Washington by fighting for redistricting reform, like we did in California,'' he told the website via email. "We are keeping all of our options open as far as how we can accomplish that."

The actor is nominally a member of President Trump's Republican Party, but has become embroiled in personal, professional and political arguments with America's controversial new leader.

Arnold took over the president's role as the host of U.S. reality TV show The Celebrity Apprentice, but quit after just one series saying viewers were boycotting the show due to Donald's continuing role as an executive producer.

The president hit back, tweeting that the actor was fired rather than quitting the show.

The pair had previously clashed over the show's ratings figures and the president's controversial travel ban policy, preventing people from select Muslim majority nations from entering the U.S.

In interviews Arnold has joked about his feud with the president, hinting he wouldn't mind fighting Donald, 70, and telling SiriusXM host Michael Smerconish that he thinks the president is in love with him.