What is the fine-grained topic of the following text: He legally entered the U.S.at Champlain, N.Y., on June 16 and was in MI by at least June 18, said Gellios, who would not say whether Ftouhi entered the US under a so-called trusted traveler program. Only return the topic.
Ftouhi's legal entry into the U.S. and subsequent travel to MI.