They said they think it's Russian Federation.
Trump also appeared to embrace Putin's offer to have Russian investigators work together with U.S. prosecutors on the case of the 12 just indicted.
FYI, what Trump said in Helsinki: "I have great confidence in my intelligence people".
"The Democrats want open borders, which is basically saying we want open borders, we want crime", Trump said. Hoeven, who visited Russian Federation with several other senators earlier this month, also acknowledged Russia's "behavior toward Ukraine and Syria".
Love spills over: Even the CIA is following their boss' footsteps, when they warned the FSB, the Russian intelligence agency, of an impending terrorist attack in St Petersburg previous year, leading to not just the arrest of seven suspects, but also leading to Putin thank Trump publicly.
Comey's comments come the day after Trump's joint press conference with Russian President Vladimir Putin, in which he refused to denounce Russia for interference in the 2016 election, and criticized his own intelligence agencies.
Blasted for questioning the findings of US intelligence agencies that Russian operatives had meddled in the election - also a subject of more than two dozen indictments by the Department of Justice - Trump seemed more open to the intelligence findings, but continued to qualify his remarks.
"About four hours after the press conference, Trump tweeted a bit of damage control, saying, "'I have GREAT confidence in MY intelligence people.' However, I also recognize that in order to build a brighter future, we can not exclusively focus on the past - as the world's two largest nuclear powers, we must get along!"
Ruben Gallego also weighed in, saying in a statement, "President Trump's meeting today with Vladimir Putin of Russian Federation was an appalling display of self-serving posturing by both men".
"Donald Trump's press conference performance in Helsinki rises to and exceeds the threshold of "high crimes and misdemeanours".
"I treat President Trump with utmost respect, but back then, when he was a private individual, a businessman, nobody informed me that he was in Moscow", he added.
The president stressed that he has said those things before and that it also has been determined that Russian interference did not change the outcome of the 2016 election.
I think we've all been foolish. I don't think that's so.
"On this particular issue, whether or not Russian Federation sought to meddle in the USA election successfully or not, most people believe they did", Baker told State House News Service.
Astonished Republicans and Democrats uniformly condemned Trump, with harsh criticism coming even from hosts on Fox News - a network normally friendly to the president.