Law & Society

U.S. ambassador to South Korea Mark Lippert underwent two-and-a-half hours of surgery after he was slashed in the face by a Korean nationalist in an attack at a forum held in Seoul on Thursday to discuss Korean reunification, officials said.

The U.S. Senate failed on Wednesday to override President Barack Obama's veto of legislation approving the Keystone XL oil pipeline, leaving the controversial project to await an administration decision on whether to permit or deny it.

The U.S. Supreme Court appeared sharply divided on ideological lines on Wednesday as it tackled a second major challenge to President Barack Obama's healthcare law, with Justice Anthony Kennedy emerging as a likely swing vote in a ruling.