RICHMOND (AP) — Illegal aliens contribute an estimated $400 million to Virginia's economy annually in taxes, according to a study released yesterday by a group hoping to counter some illegal-alien criticism in the legislature. The Commonwealth Institute for Fiscal Analysis estimates that illegal aliens contribute between $379 million and $453 million a year in income, sales, property and other taxes. "Some of the strongest voices against immigration in Virginia have characterized undocumented immigrants as takers, as people who do not contribute to our state and to our community. This research clearly demonstrates that they are wrong," said Michael Cassidy, executive...