HOUSTON — Raids on 14 illegal bus companies here have shed light on a seedy underground system that transported illegal immigrants all over the country and that sometimes held them captive until their relatives paid exorbitant fares, federal law enforcement officials said Thursday.
Using minivans, the companies were carrying hundreds of illegal immigrants from Mexico to cities across the United States, taking back roads and traveling primarily at night to avoid the authorities, according to criminal complaints filed in Federal District Court. Twenty-two people were arrested earlier this week on charges of using their businesses to transport illegal immigrants...
