Sen. Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I-Vt.) on Friday chided President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE over his handling of Russian President Vladimir Putin during a summit in Helsinki earlier in the week.

Speaking at a rally for local Democratic congressional candidates in Wichita, Kan., Sanders also knocked Trump for "tearing children from their families" as part of the administration's "zero tolerance" border policy.

"We say to Trump, instead of showing us your strength by tearing children from their families, where was your strength in standing up to Putin and Russia for undermining American democracy?" Sanders said to cheers.

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"How courageous he is to tear children from their families, how cowardly he is to stand up to people who are trying to undermine not only American democracy but other aspects of our lives," he added.

Sanders made similar remarks at a rally in Kansas City, Kan., on Friday night, where he and fellow self-described democratic socialist Alexandria Ocasio-Cortez rallied in support of Democrat Brent Welder in his bid to take on Republican Rep. Kevin Yoder Kevin Wayne YoderBottom line Amanda Adkins wins GOP primary to challenge Rep. Sharice Davids Sharice Davids to vote for Trump impeachment articles: 'The facts are uncontested' MORE.

“We have a president that’s so tough when he’s terrorizing little children. When he was up against Vladimir Putin, he wasn’t so tough," Sanders told those gathered.

Yoder is running for his fifth term in Kansas's 3rd District, where Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE narrowly defeated Trump in 2016.

Trump faced criticism from both sides of the aisle this week after a joint press conference with Putin on Monday during which Trump appeared to side with Putin's denials over the U.S. intelligence community's assessment that Russian interfered in the 2016 election.

The president walked back his remarks Tuesday, telling reporters that he meant to say he saw no reason why Russia "wouldn't" have been behind the efforts to undermine U.S. democracy in 2016, while leaving the door open to the possibility that other countries had been involved.

“I accept our intelligence community's conclusion that Russia's meddling in the 2016 election took place,” Trump said Tuesday, reading from a prepared statement at the White House, adding: “Could be other people also. A lot of people out there.”