Male contraceptive testing has recently moved to the US. Over 60 percent of men in four different countries have expressed interest in the contraceptive -- the US was not included in the survey.

The Intra Vas Device or IVD is a plug that is inserted into a small hole cut in the scrotum. This blocks sperm from traveling in the body. If it is approved, IVD and the vasectomy will be the only two forms of birth control for men.

Many men said they would like to have a back up contraceptive to condoms or just want some more control over their destinies. Some men even said they would like to take some of the burden off of them women in their relationships when it comes to birth control.

Now researchers need to ensure that men can go on and off of IVD like women can do with their current contraceptives and still be able to have children. Men will test IVD over a span of years to make sure they are still reproduce. IVD has been tested in men in Europe and in monkeys.

Elaine Lissner, with the US organization Male Contraceptive Information Project in San Francisco said, "But we know that in vasectomy, even if you can get sperm flowing again, the chances of pregnancy go down by about 10% for each year the man had the vasectomy. Only time will tell if it's the same for IVD."