smuggle (someone or something) across
To transport someone or something across (some place or border) in a surreptitious or hidden manner, especially when it is illegal to do so. A: "I really miss the fresh salami they make back home, but I can't bring it through customs with me." B: "I'll try to smuggle some across for you the next time I come to visit." The man was sentenced to 10 years in prison for smuggling people across the border.
smuggle someone or something across something
to move someone or something across a border illegally and in secret. The terrorists smuggled one of their number across the border last night. Larry helped smuggle contraband across the border.