Adam Kredo of the Washington Free Beacon documents one of the most disturbing potential uses of American tax dollars.

Iran is estimated to have spent at least $37.4 million in recent U.S. cash payments to fund its global terrorism operation, including organizations responsible for the murder of U.S. citizens, according to new research provided to the Washington Free Beacon by analysts.

The recent $1.7 billion cash payment to Iran—which is being described by many in Congress as a ransom payment to the Islamic Republic—will be used in part to fund Iran’s leading military organization, the Islamic Revolutionary Guard Corps (IRGC), which is responsible for orchestrating terror attacks that have killed Americans.

The new research comes amid a growing scandal over the Obama administration’s decision to hand Iran billions in cash as part of an effort to secure the release of several U.S. hostages earlier this year.

Leading lawmakers now suspect that the IRGC played a key role in assuming control of this cash, which the White House has admitted to putting directly in Iranian hands, the Free Beacon disclosed Monday evening.

When viewed in light of Iran’s current spending levels, it is expected the Islamic Republic will use at least $37.4 million of this $1.7 billion to fund IRGC operations, which have led to bloody battles in Syria and terrorist attacks across the globe, according to the American Action Forum, a non-profit research organization headed by a former top congressional official.

“Applying the official spending levels to the U.S. payment to Iran, the $1.7 billion would mean $37.4 million for the IRGC,” according to research published by Rachel Hoff, AAF’s director of defense analysis. “Paying ransoms in exchange for Americans held abroad is one bad policy—indirectly funding terrorism is another.”