The U.S. Treasury Department on Friday imposed sanctions on the son of Nicolas Maduro, saying he serves in his father’s illegitimate government.

The move adds to the U.S. pressure on Venezuela, and specifically on Maduro and his family: Maduro himself was sanctioned in July 2017 and his wife was designated in September 2018.

A senior U.S. official said the Trump administration is considering expanding its efforts against family members of Maduro officials as part of its focus on corruption by the leader’s allies, according to reports by NPR and the Associated Press. Earlier this week, the U.S. sanctioned and charged a former electricity minister and the procurement director of a Venezuelan state-owned power company for allegedly laundering bribe money related to contracts signed with U.S. businessmen.  

“The point that we're trying to make is that Maduro's corruption is so endemic throughout the entire region and all of the institutions in Venezuela...that we are going to broadly, as we can find all examples of corruption and choking some of those corrupt finances,” the official was quoted by NPR as saying. 

The Treasury in May flagged widespread public corruption in Venezuela in an advisory alerting financial institutions about the methods officials, their families and their associates use to move, hide and access illicit funds.

Nicolas “Nicolasito” Ernesto Maduro Guerra is a member of Venezuela’s National Constituent Assembly, a rubber-stamp legislature established by Maduro that the U.S. has declared as illegitimate, the Treasury said Friday. Nicolasito has been involved in propaganda and censorship efforts, and has profited from Venezuelan mines along with his parents, according to the Treasury.