The findings were revealed to the public Thursday with the release of the redacted Mueller report.
According to Attorney General William Barr, the report shows no collusion between President Trump's team and Russia.
Republicans have treated the report as vindication, but democrats say more needs to be done.
Republican Senator Susan Collins and Democratic Representative Jared Golden both said they haven't had a chance to review the report yet, but look forward to doing so.
"It's a serious subject," said Rep. Golden, "and we're going to treat it as such. We're going to read every page."
"I'm pleased that the report is finally out, and that Congress will be given an opportunity, the leaders of Congress, to read a version of the report that is mostly unredacted," said Sen. Collins.
Lawmakers and the public have speculated on what's in the report ever since Mueller delivered his findings last month.