The FBI is reportedly going after Americans planning to attend - or those who attended - an Iran-linked conference. Reports claim agents are personally visiting homes to warn about the consequences.
The New Horizon Conference is generally held by Iranian media experts, with the intention of discussing global affairs, though, critics in the US government claim it mainly focuses on American interests in Israel.
In February this year the conference was sanctioned by the US Treasury over claims it's little more than a recruiting hub for Iranian intelligence. And therefore those who still chose to go could face fines.