Republican chairman nevertheless slams Helsinki summit as "a squandered opportunity to challenge Vladimir Putin’s false narratives."
"There is an urgent need to address this matter given the continued interference by Russia in the upcoming 2018 midterm elections."
Kremlin hasn't yet accepted White House invitation, suggesting maybe Trump and Putin can meet at future event with other world leaders.
"It is a proposal that was made in sincerity by President Putin, but President Trump disagrees with it," says Sanders after outcry.
Putin got "90 percent of what he wanted just by the whole thing happening."
"I hold both countries responsible... I think we're all to blame," Trump says on relations at summit.
Rand Paul attributes criticism of the summit to "Trump derangement syndrome."
"Who knows what he might have agreed to in private," says Warner as Intelligence Committee members review Helsinki press conference.
Attack presents Trump tweets as equivalent to Putin's jailing of journalists.