Responding to Trump’s remarks, former Vice President Joe Biden, who has been consistently polling in at number one among 2020 candidates in recent months, tweeted: “America’s strength is and has always been rooted in our diversity. But President Trump continues to spew hateful rhetoric, sow division, and stoke racial tensions for his own political gain.

“Let’s be clear: Racism and xenophobia have no place in America,” the 76-year-old Democrat added.

Biden’s sentiment was shared by every other 2020 Democratic candidate polling above 2 percent, who either called Trump a “racist” or condemned the president in some form for his remarks.

“When I call the president a racist, this is what I’m talking about. We must stand together for justice and dignity towards all,” Sanders tweeted, citing Trump’s tweet.

“Let’s be clear about what this vile comment is: A racist and xenophobic attack on Democratic congresswomen,” Warren, who has recently risen to second place in various polls, tweeted. “This is their country, regardless of whether or not Trump realizes it. They should be treated with respect. As president, I’ll make sure of it.”

“Let’s call the president’s racist attack exactly what it is: un-American,” Harris added, alongside screenshots of Trump’s tweets.

When asked by reporters at the annual Progress Iowa Corn Feed whether he considers Trump’s tweet as “racist,” South Bend, Indiana Mayor Pete Buttigieg said: “Yes, I do.”

“As an immigrant and a citizen, my dad cared deeply about this country,” Buttigieg added. “Once, when he was speaking at a campus protest against Reagan’s accommodation of apartheid, a passing student noticed Dad’s brown skin and unique accent and called out: ‘go home!’ He answered: ‘I am home.’”

Trump, on Sunday, referenced an ongoing feud between four freshman progressive congresswomen, Alexandria Ocasio-Cortez, Rashida Tlaib, Ilhan Omar and Ayanna Pressley, and Democratic Speaker Nancy Pelosi, and urged the freshman lawmakers “who originally came from countries whose governments are a complete and total catastrophe” to “go back” to “help fix the totally broken and crime infested places.”

Although Trump didn’t specifically name any of the congresswomen, most agreed that his comments were directed at the four lawmakers, collectively referred to by some as the “Squad.” Despite the president’s claim that they were all foreign-born, only one — Omar — was born outside of America. Omar became a U.S. citizen when she was 17.

Read other 2020 Democratic candidates’ responses to Trump’s tweet below: