"I got the tweet at the same time as all of you and was just as surprised. Nevertheless, I heed the call,” said Gibson in a statement.

The US president-elect made the actors his "special envoys" to Hollywood, which he said had lost business to foreign countries and needed to be "bigger, better and stronger" than ever before

Mel Gibson, Jon Voigt and Sylvester Stallone are all outspoken supporters of President-elect Donald Trump, a rarity in Hollywood.