was working for the f.b.i. the allegation is that he bought plane tickets to travel to syria to join the al qaeda jihad and in a recent interview, the chairman of the house intelligence committee said the number of u.s., canadian and european citizens surpasses what the intelligence community saw at the height of the iraqi insurgency. >> they'll have passports, good passports, allows them to travel around europe, maybe get to the united states. that's concerning. >> the head of the house homeland security committee is also sounding the alarm or the defendant's high vacancy rate, including positions at the border agency known as c.d.p. and immigration known as ice because they're charged with keeping terrorists outside of the country. >> we're not talking about -- this is a national security agency that's 50% vacant at the top and it signals to me it must not be a priority for this