Kate Steinle Lawsuit Has Political Reverberations in Washington Over Illegal Immigration

Kate Steinle's parents announced they'll be suing the federal government.

— -- As the family of a woman allegedly slain by an undocumented immigrant filed a claim today in advance of a lawsuit over her death, a fierce debate in Washington over the practice of so-called "sanctuary cities" is expected to consume Congress after members return from their summer recess.

Congress has been working on legislation known as "Kate's Law," after Kate Steinle, the victim of the attack in San Francisco that made national headlines earlier this summer. It would end federal funding for so-called sanctuary cities that defy federal immigration actions.

"The system failed our sister," Brad Steinle, Kate's brother, said at a family news conference today, fighting back tears. "And at this point nobody has taken responsibility, accountability. And nothing has changed."

The House is considering companion legislation, introduced by Rep. Matt Salmon of Arizona.

"Kate's Law" would bar sanctuary cities from accessing more federal grants than are already available to them and increase penalties for individuals who re-enter the United States after deportation. It's not clear how much bipartisan support the bill would receive -- a similar bill passed the House in late July, with the votes divided largely along party lines.

The parents of Kate Steinle have found themselves at the center of the sanctuary cities debate.

Jim Steinle testified before the Senate Judiciary Committee in July, urging lawmaker to pass legislation like Kate's Law that would keep undocumented immigrants like Sanchez, a convicted felon who had been released from prison, from remaining in the country.

"Our family realized the complexity of immigration laws. However, we feel strongly that some legislation should be discussed, enacted or changed to take these undocumented immigrant felons off our streets for good," Jim Steinle said.

ABC News' Avery Miller contributed to this report.

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