"VasalgelTM is a long-acting, nonhormonal contraceptive similar to vasectomy but with one significant advantage: it is likely to be more reversible. The procedure is similar to a no-scalpel vasectomy, except a gel is injected into the vas deferens, rather than cutting the vas. The polymer forms a semi-solid plug with a porous structure that blocks sperm — sperm are too big to fit through the pores — but lets other fluids flow through. If a man wishes to restore flow of sperm, whether after months or years, the polymer is flushed out of the vas with another injection."
http://www.parsemusfoundation.org/vasalgel-home/
Vasalgel is close to clinical trials and shouldn't be stopped if it is deemed safe. Help keep the "health care" lobbyist from blocking this innovation in reproductive health.