Former Republican President George W. Bush waded into the simmering immigration debate on Wednesday, calling the current set of laws “broken” and urging leaders to reach a “positive resolution” as negotiations come to a head in Washington.

“We have a problem: The laws governing the immigration system aren’t working,” Bush said ahead of a naturalization ceremony at his presidential library in Dallas. “The system is broken. We’re now in an important debate for reforming those laws — and that’s good.”