House Democrats are trying to use the power of the purse to block the transfer of US nuclear technology to Saudi Arabia amid concerns that the Donald Trump administration is too keen to strike a deal with the kingdom.

The House foreign aid panel’s spending bill for fiscal year 2020, released today, would bar the use of federal funds to “support the sale of nuclear technology to Saudi Arabia.” The provision comes as Democrats accuse the Trump administration of using a legal loophole to provide undisclosed nuclear technology and assistance to Riyadh.

“Given the administration’s failure to share important information about these activities with Congress, we included this provision, which prevents the administration from allowing the sale of nuclear technology to Saudi Arabia,” a House Democratic aide who did not want to be identified told Al-Monitor. “We hope this will force much-needed transparency on this issue.”

Lawmakers are concerned that Riyadh has not agreed to terms that would preclude it from enriching uranium or reprocessing plutonium on its territory, precursors to a nuclear weapons program. Crown Prince Mohammed bin Salman notably raised eyebrows last year by vowing that Saudi Arabia would pursue a nuclear weapon if Iran obtained one.