Formerly a major player in the cryptocurrency industry, FTX suffered a historic collapse earlier this year that has left many asking questions.
DHS also says two of the men never should have been allowed into the country or been granted the immigration status they were by the Biden administration.
The FBI confirmed that its agents were at the correctional center but did not give more details.
Senate Majority Leader Chuck Schumer, D-N.Y. urged Menendez to resign.
While the district attorney's office asked if it could meet with committee staffers, the DA's office said full compliance with the Republicans' request could pose problems.
The teacher is an alleged associate of the Rich Kingz gang “who was caught on a court-authorized wiretap allegedly conducting drug deals while in class,” the FBI-Houston said in a statement.
Many prominent Democrats still claim voter fraud is not a real issue unless they are on the losing side, in which case the elections were "stolen."
"President Trump is waging an unprecedented campaign of vengeance against his enemies," Rep. Jamie Raskin said
He faces charges of conspiracy to commit honest services fraud, federal program bribery, and conspiracy against rights