Which part of the U.S. government is outsourcing jobs to a call center in Costa Rica?

[Toucano]

Stumbled upon this announcement on craigslist: (safe for work/school):
http://costarica.en.craigslist.org/mar/2087452858.html

American Respect Work (San Pedro)

Date: 2010-11-30, 12:08PM CST
Reply to: [e-mail]

American Respect Work

We are a rapidly growing call center, and we need Service Reps with perfect English skills.
Our account is with the US Government, and is the most honest job you could find in Costa Rica.
Our project will last for years, so this is a long-term job.We need good people,
American's and College Students with a great, hard working attitude.

Hours are 11am to 8pm / Monday-Saturday
Call today for an interview, and maybe start tomorrow.
Mr. Brian 8750.6347

With all the people out of work in the U.S., doesn't it seem unusual that a contract with the U.S. government for telephone service reps (with perfect English) would be awarded to a company in Costa Rica?

The telephone number is a cell phone, so I have no idea what the company is named.