No. Members of the Coalition are taking their equal turns to patrol and mount missions. The French carrier is on station now so the Navy Rafales are complementing the Air Force examples. The Canadians have started flying missions. Even the Swedes have offered up their SAAB Gripens.
Your vision of the US getting out of NATO is not going to happen. No US Administration is going to take such a measure.
Apparently Qatar is also flying, and at one point I noted that the Emirates said they would take part. I pulled up the latest AOL News feed on Libya. There are 500 photos and over 3,000 comments. I read some of the comments and a few were so poorly spelled or worded that I wondered if maybe they were a Libyan anti assistance plant. Then I saw where someone said a comment was a direct quote from a Kaddafi loyalist site.
http://www.aolnews.com/2011/03/22/gadhafis-forces-libyan-rebels-face-standoff/?ncid=webmail