A Republican member of the House Oversight Committee said he and other top lawmakers will investigate the Obama administration’s efforts to derail the Drug Enforcement Administration campaign targeting the Iran-backed terrorist group Hezbollah.

The Obama administration threw a series of roadblocks in the way of the DEA’s efforts to track Hezbollah’s trafficking of drug and weapons, money laundering and other criminal activities, some of which were happening in the U.S., as the administration worked to secure a nuclear deal with Iran, Politico reported Sunday.

Rep. Ron DeSantis told the Washington Free Beacon on Wednesday he and other lawmakers are looking at evidence that could implicate top Obama officials.

"Congress will be investigating this thoroughly and my National Security subcommittee will be particularly interested in how such a decision came about and whether it was driven by key Iran deal architects such as Ben Rhodes," DeSantis said, referring to the Obama national security adviser behind the Iran deal.

Sources told the Free Beacon congressional investigators are preparing letters to U.S. government agencies asking for more information on the scheme.

“It was potentially criminal,” a senior congressional source told the Free Beacon. “Congress absolutely has a responsibility to get to the bottom of this."