>> I believe the arrest authority of the Sergeant at Arms is now restricted to Capitol Hill, period.
Still peddling your OPINION in the face of facts to the contrary?
The Supreme Court says the authority of the Sergeant at Arms extends throughout the United States
“And, as to the distance to which the process might reach, it is very clear that there exists no reason for confining its operation to the limits of the District of Columbia; after passing those limits, we know no bounds that can be prescribed to its range but those of the United States.” Anderson v. Dunn - 19 U.S. 204
A fact. Not an opinion.