Anti nuclear waste campaign
Paul Wellstone was back in Texas in 1998, responding to requests from a coalition of groups in West Texas, Wellstone became the Senate’s greatest single obstacle to a plan that would have made the tiny town of Sierra Blanca the nation’s next nuclear waste dump.
Wellstone was the only U.S. Senator to stand with members of the Texas House delegation and residents of Sierra Blanca in opposition to the Sierra Blanca site. He joined Lloyd Doggett, Ciro Rodriguez, Silvestre Reyes, and Sierra Blanca Catholic pastor Rev. Ralph Solis at a Capitol press conference called by opponents of the Sierra Blanca dump. 
Congressional Hispanic Caucus
In 2012 Silvestre Reyes was a member of the Congressional Hispanic Caucus.
In a 2011 to Congress to support Planned Parenthood, Communist Party USA supporter Vivian Weinstein stepped into the office of Rep. Silvestre Reyes, D-Texas, just before the April 8 vote on the budget cuts.
She was given a letter that Rep. Reyes had sent to Sen. Daniel Inouye, D-Hawaii, chair of the Senate Appropriations Committee, describing the devastating effects of slashing funds that would not only affect his district in South Texas but nationally. His letter included the number of people affected and the jobs that would be lost.