The onetime billionaire sports enthusiast has proclaimed his innocence since the SEC brought accusations against him in February.
Kendall and Gwendolyn Myers, arrested two weeks ago, made a court appearance Wednesday.
Experts say recent attacks back up the findings of a controversial Department of Homeland Security report.
Two are still in custody. The case is seen as a test of the new agreement between the US and Iraq that allows Americans to be tried in the Iraqi legal system.
Did alleged attacker Abdulhakid Mujahid Mohammed act on his own, or was he a trained jihadist?
The man charged with murder in the Holocaust Museum shooting gave clear clues about his hatred of Jews on the Web. But it's hard for law enforcement to filter anger from murderous intent.