Former GOP Sen. Rick Santorum (Pa.) said Wednesday that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's claims about the Russia investigation shouldn't be alarming because the president "doesn’t tell the truth about a lot of things fairly consistently."

"The president doesn’t tell the truth about a lot of things fairly consistently," Santorum, a CNN commentator, said during a panel discussion on"Anderson Cooper 360."

"And so the fact that he’s not telling the truth about Russia fairly consistently, at least in the eyes of the people around here, why is that any different? It’s not like he’s doing something out of character with the Russia investigation, that he’s not doing in other areas," he continued.

"Is that really the best defense you can come up with?" @JeffreyToobin asks @RickSantorum, who argued that President Trump is seen to lie so consistently "it's not like he's doing something out of character with the Russia investigation." https://t.co/zq0dlq8S0F pic.twitter.com/l84z0PpVNV — Anderson Cooper 360° (@AC360) February 28, 2019

"Is that really the best defense you can come up with?" CNN legal analyst Jeffrey Toobin responded.

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Santorum defended his comments, stating that Trump is "not acting differently" when it comes to his remarks about special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's Russia investigation.

The comments came the same day that Trump's former longtime layer, Michael Cohen, testified publicly before the House Oversight and Reform Committee. Cohen, who last year was sentenced to prison for financial crimes and campaign finance violations, accused Trump of taking part in multiple crimes.

Cohen, among other things, said Trump knew that Roger Stone, a former informal advisor to the president, was in contact with WikiLeaks about the release of damaging Democratic emails during the 2016 presidential campaign.

Trump has denied speaking with Stone about WikiLeaks.

Speculation has grown in recent weeks that Mueller's probe into Russian election interference and whether the Trump campaign colluded with the Kremlin is nearing its conclusion.

Trump has repeatedly derided the investigation as a "witch hunt."