President Trump’s special envoy said that “we will now consider alternative options to bring the hostages home,” though it was not clear that negotiations had halted.

The deal, which came under intense scrutiny by the Trump administration, was hailed by the F.C.C. chief, who welcomed “significant changes” at CBS, a unit of Paramount.

The director of national intelligence gave the Justice Department little warning before she demanded an investigation.

Reactions ranged from fierce criticism to relief after the university reached a settlement over allegations that it failed to stop the harassment of Jewish students.