U.S. President Donald Trump Sunday said his country won’t be paying for the security protection of Prince Harry and his wife Meghan while their stay in the U.S.

The U.S. president’s announcement came after reports of the couple’s arrival in Los Angeles, California.

“I am a great friend and admirer of the Queen & the United Kingdom. It was reported that Harry and Meghan, who left the Kingdom, would reside permanently in Canada. Now they have left Canada for the U.S. However, the U.S. will not pay for their security protection. They must pay!,” Trump said on Twitter.

Read more: Trump: US won't pay for security of Prince Harry, wife