I am all for the reduction/elimination of corruption every where - not just in India. This is one of the bad behavior that's worth changing in the gene.
Anna's supporters are from US as well. http://www.dandimarch2.org/ is owned by Ranadheer Kumar Varma Dantuluri 3901 Parkview Ln Apt #9B Irvine California 92612 9493506498 varmadrk@gmail.com . The web site says "6 main marchers (Jawahar Kambhampati, Kewal Parnami, Srihari Atluri, Srinivas Nandiwada, Subhash Karri & Sunil Kumar) walked 240 miles in 15 days and concluded at Gandhi Statue in San Francisco. 600 or more walkers supported them in over 30 cities with 5000 man miles. Varma Dantuluri alone added 100 man miles."
Do we consider this information as US influence? Are these individuals and their supports American Citizens/immigration/residents (even if they are Indian Citizens / OCI holders).
Moving on to the support with in India. The movement is supported by younger generation - Some of them get paid on their day job by their US clients.
So, on a long stretch - US has supported Anna's movement against Corruption in India.