[sarasmom]

In case you missed a few important sentences in the linked article, he originally came under suspicion as a close acquaintance of a terrorist who attempted to commit a terrorist act in his state.

He was stopped from leaving the country due to his documented attempts to join an international terrorist organization. That is against our laws.
It appears from the article, the government does have numerous legally obtained evidence to offer as “reasonable proof”.

So yes, a US citizen can and will be stopped from leaving the country, if a judge is convinced by a preponderance of legally obtained evidence, and a judge determines it is legal to detain him/her, because a formal accusation of his/her intent to commit illegal acts on foreign soil is within the bounds of reasonable.

What aspect of this case do you have a problem with?

[Conserev1]

Let him go there just not return!
He might just make a mistake learning suicide bombing!
Or being American with out a head!