Edited/Complied with,SHUT !
 

Whom are you in the UK. to tell US. human rights, you are outspoken, give others the same right, or perhaps you are one of them. I would like to see you get into your panties both legs at the same time:har:

Try USc 31 1108(g) and the CODEL for each of the sessions since 9/11

If by hire you mean pays then you do if you are a taxpayer as he is a government employee, just like you paid for him in his previous government job.
If you mean who appoints him then he is chosen from a list of candidates submited to the house , in the case of the current one he has been chosen first by the republicans then again by them ,then has gone on getting hired variously by democrats and republicans each session, for his current term it was the democrats again.

The Sergeant-at-Arms is not hired but elected by the House. It appears that the Speaker of the House has the authority to nominate who they wish to be the Sergeant-at-Arms but there is a formality of a vote of the entire house.

http://clerk.house.gov/art_history/h...s_at_arms.html

Gives a history of the position

http://clerk.house.gov/legislative/rules/rule2.html

Describes the official duties of the position

http://www.c-span.org/questions/weekly12.asp

The House Sergeant-at-Arms is Wilson Livingood, while Gregory Casey holds the position in the Senate. The Speaker of the House and the Senate Majority Leader have the prerogative of selecting and nominating an individual for the post in their respective chambers. Their candidate must then be elected by majority vote of the full chamber, but this is a mere formality.

http://www.rules.house.gov/archives/98-835.pdf

Is a fact sheet from the CRS on the position