On Friday, the Trump administration announced that it was barring from the U.S. travelers from Iraq, Syria, Iran, Sudan, Libya, Somalia and Yemen.
Musk, who is himself a South African immigrant to the U.S., expressed disapproval shortly after the policy was announced.
Late Sunday afternoon, Musk took to Twitter, seeking specific recommendations on how to improve the controversial ban. The entrepreneur said he would take suggestions to the President.
In recent weeks, Musk has been criticized for his "budding bromance" with Trump. And Twitter users further criticized the tech titan for seeking feedback on how to improve an executive order seen by many as morally wrong.
Musk replied that he understood that Trump would not repeal the ban but that the President might be open to adjusting it.
And some Twitter users did express support for Musk's efforts to find a way forward.