The Houthis ousted a Saudi-backed government from Sanaa in late 2014 and have been at war against a Saudi-led military alliance since 2015.
The Republican's letter on Friday alleged the White House deliberately withheld 120 mm tank ammunition, 120 mm mortar ammunition, light tactical vehicles, air-to-air missiles, and more.
The suspects include a licensing official at the National Security Ministry, as well as three officials who worked to collect firearm license applications and approve them.
According to reports, the bombs "are in the process of being shipped" and could arrive in Israel in coming weeks.
The experts stated that the serial numbers visible on the fragments of the munitions matched those for a manufacturer of GBU-39 parts based in California.
US Secretary of State Antony Blinken on Wednesday said the US and Saudi Arabia were very close to concluding a set of agreements on nuclear energy, security and defense cooperation.
Jean-Pierre added that the White House’s messaging on Rafah has been consistent, and so has its messaging about Israel’s right to defend itself.
Biden's support for Israel in its war against Hamas has emerged as a political liability for the president, particularly among young Democrats, as he runs for re-election this year.
Biden is seen to be capitulating to terror to swing state voters and campus protesters.
The delay is an alleged attempt by the US to send a message to Israel about operating in Rafah without an appropriate and credible humanitarian plan.