No, he is not.
[Romney]
10 Republican senators have announced support for resolution aimed at terminating Pres. Trump's emergency declaration:
• Sen. Collins
• Sen. Murkowski
• Sen. Tillis
• Sen. Paul
• Sen. Lee
• Sen. Romney
• Sen. Alexander
• Sen. Toomey
• Sen. Moran
• Sen. Portman
https://twitter.com/msnbc/status/1106250590995312640?s=21