A former Los Alamos National Laboratory scientist who pleaded guilty to trying to help Venezuela develop a nuclear weapon is set to be sentenced.

Pedro Leonardo Mascheroni is scheduled to appear before a U.S. district judge in Albuquerque on Wednesday.

Mascheroni and his wife, Marjorie Roxby Mascheroni, pleaded guilty in 2013 to offering to help develop a nuclear weapon for Venezuela through dealings with an undercover FBI agent posing as a representative of the Venezuelan government.

The wife, a former lab contractor, was sentenced to a year and a day in prison for conspiring with her husband to sell nuclear secrets.

Pedro Mascheroni faces up to 5 1/2 years in prison and 10 years of supervised release. He is a naturalized U.S. citizen from Argentina.

The U.S. government is not alleging Venezuela sought U.S. secrets.