Makk9 writes:
If it is accurate ...
Yes, "
if", but so far no one in authority has claimed that it is. The supposed authority for the article you cited are "high-level federal law enforcement, intelligence and other sources." Perhaps were they to shed their anonymity, we could evaluate their gravitas. However, as things stand, the article's assertion is
incredible.
You further assume that the administration is doing nothing to prevent a cross-border attack by ISIL. In fact, that eventuality is within the purview of the Department of Homeland Security. It is safe to assume that some of its $39 billion funding this year is going towards preventing just such an assault.
The specter of ISIL cadres massing south of the border in anticipation of an invasion is a fanciful creation of Right-Wing propagandists who are using it as a hook to trick people into reading, again, their tired anti-Obama diatribes.