(SAN FRANCISCO CHRONICLE) — Kestutis Zadvydas was the opposite of what most people would envision as an ideal immigrant to the United States. He was a convicted thief and cocaine dealer, and U.S. officials ordered him deported in 1994 to his native Germany.

But Zadvydas was never sent home.

Neither were, by some counts, thousands of other convicted criminals marked for deportation to their countries of origin in the past decade – including Binh Thai Luc, 35, who is accused in last week’s slayings of five people in a San Francisco row house.

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