Sen. Bernie Sanders Bernie SandersMcConnell accuses Democrats of sowing division by 'downplaying progress' on election security The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters Why Democrats must confront extreme left wing incitement to violence MORE (I-Vt.), a 2020 White House hopeful, on Sunday dismissed concerns that his status as a self-proclaimed democratic socialist would be a liability in a general election and said President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE’s description of his ideology as “communist” was inaccurate.

“Obviously I am not a communist,” Sanders told host Chris Wallace Christopher (Chris) WallaceCNN to host first 'drive-in town hall' with Biden on Thursday The Memo: Warning signs flash for Trump on debates Sunny Hostin slams 'misogynistic, racist, homophobic' Joe Rogan after his offer to moderate debate MORE on “Fox News Sunday” in response to a clip of Trump using the designation in a Fox News interview, adding that Trump “maybe doesn’t know the difference.”

Sanders also called Trump a “pathological liar” for claiming Sanders was “married in Moscow.”

Wallace continued to press Sanders on how he would address criticisms that agenda items such as the Green New Deal, "Medicare for All" and forgiveness of college debt are radical and prohibitively expensive.

“In many respects, we are a socialist society today,” Sanders responded, noting the tax breaks and subsidies Trump received from the government as a businessman.

“The difference between my socialism and Trump’s socialism is I believe the government should help working families, not billionaires,” he added.

Addressing his specific proposals, Sanders said the price tags and the overhaul of the status quo were preferable to the alternative.

“If we leave the [health care] status quo alone, in the next 10 years, we’re going to be spending $50 trillion,” he said. “Medicare for All will cost the average American less than the $12,000 a year they are paying the insurance companies.”

Similarly, while discussing the Green New Deal, he described climate change as an "existential crisis."

"How much do you think it’s going to cost when we have increased disturbances?" he asked.