Well, he was being investigated quite a few years prior to his WH meeting invitation.
And his wife was invited to testify before Congress twice in 2000. The son was an aide to David Bonior.
I agree the WH visit should not have happened, but I can see how some aide would think how much political contact and respect had been granted in the past and foolishly decided the family should be granted access. As is plain to see, that was nipped in the bud pronto. The very next visit by the son a few days or weeks later ended with him being escorted OUT of the meeting.
So you think that the WH knowingly invited a possible terrorist?