WASHINGTON – On the morning of Jan. 28, federal agents knocked on Shirley Tan's door, showed her a deportation letter and put her in handcuffs. "I was put into a van with two men in yellow jumpsuits and chains and searched like a criminal in a way I have only seen on television and in the movies," said Tan, 44, a housewife and mother from Pacifica. But Tan is still in the United States today, and she says there's only one reason why: "the great compassion" of California Democratic Sen. Dianne Feinstein. People seeking to get around U.S. immigration laws...