The highly anticipated sessions were more sizzle than substance, as Mr. Mueller tried to stick rigorously to the information and language in the voluminous report he produced in April. We’ll have deeper analysis on nytimes.com shortly.

The questions: Though Democrats did get Mr. Mueller to confirm, on the record, the most damning elements of the report, Republicans spent much of their time trying to portray the investigation as biased.

Highlights: Mr. Mueller was a reluctant witness but he reiterated that the president was “not exculpated for the acts that he allegedly committed,” sharply rebutting Mr. Trump’s declarations that he had been “totally exonerated.”

Mr. Mueller also offered stark warnings about the threat of foreign interference in American elections. “I hope this is not the new normal,” he said. “But I fear it is.” Watch the biggest moments here.