WASHINGTON (AP) — The Republican-led House narrowly passed a sweeping farm bill Thursday that would toughen work requirements for food stamp recipients.

The bill passed by a vote of 213-211. Democrats unanimously opposed the measure, saying it would toss too many people off government food assistance. But 20 Republicans also voted no, giving GOP leaders a brief scare in what was their second attempt to pass a farm bill. In May, they suffered an embarrassing setback when 30 GOP members opposed passage in an effort to force a vote on conservative immigration legislation.

The measure also renews...