"Blue and White Future" has to show if it received direct or indirect funding from the Biden administration, which could be illegal, the letter stated.
Two Congressional committees have sent a second warning letter to an Israeli political opposition group to show if it received direct or indirect funding from the previous administration, which could be illegal.
The House Foreign Affairs and Judiciary Committees were not satisfied with the answers given by Blue and White Future (BWF) in response to their first request, which was sent in March.
The NGO provides financial, logistic and other support to several groups that demonstrate regularly against the duly elected but right-wing government of Prime Minister Benjamin Netanyahu.