He can’t! He doesn’t have that power. Birth control is protected by multiple Supreme Court cases. The executive branch has no say. Now I’m not saying the judicial branch couldn’t reverse decisions (rip roe), but trump cannot. What he’s doing is cutting birth control from foreign aid. Terrible, but not a ban.
Yes, that doesn’t change that there are no related cases appealed anywhere close to the Supreme Court. Even if they wanted to, they can’t ban birth control unless a case comes to them. Congress has no relevant bills proposed. If anything changes, I’ll be the first to sound the alarm. Right now, there is no need for alarm. Trump is a lunatic, not a king.