“The next time the US does a comet rendezvous...”
Huh? The next time the US does a comet rendezvous will be the first time.
The US hasn’t LANDED on one, but has done at least two different rendezvous, the first one was early 1980s, and was a flyby by repurposing an existing probe. This beat the ESA to their rendezvous with Halley, and yielded data that improved that later mission.
NASA Releases Images of Man-Made Crater on Comet
http://www.freerepublic.com/focus/chat/2674365/posts
Queen’s Brian May Comes Out For The Protection of Comets from Vandalism
http://www.freerepublic.com/focus/bloggers/1433639/posts