Elon Musk, the world’s richest person, will be taking on an official role to try to help President-elect Donald Trump make government more efficient. It will add yet another responsibility to an ever-growing to-do list for the increasingly distracted CEO and business leader.

Musk has been so aggressive in pushing his views about Trump’s second term that he’s stepping on the toes of Trump’s transition team and may be overstaying his welcome at Mar-a-Lago, according to two people familiar with the transition who have spent time at the Palm Beach, Florida, resort over the past week.

President-Elect Donald Trump has named billionaires Elon Musk, one of his biggest campaign supporters, and Vivek Ramaswamy, his one-time primary opponent, to lead a new “Department of Government Efficiency"—giving Musk a role in his administration after Trump and the world’s richest person spoke on the campaign trail about working together.