Biden responds to GOP senator's impeachment warning

DES MOINES, Iowa — Former Vice President Joe BidenJoe BidenHillicon Valley: Biden calls on Facebook to change political speech rules | Dems demand hearings after Georgia election chaos | Microsoft stops selling facial recognition tech to police Trump finalizing executive order calling on police to use ‘force with compassion’ The Hill’s Campaign Report: Biden campaign goes on offensive against Facebook MORE responded to Iowa Sen. Joni ErnstJoni Kay ErnstGeorge Conway group hits Ernst in new ad GOP senators introduce resolution opposing calls to defund the police The Hill’s Campaign Report: Republicans go on attack over calls to ‘defund the police’ MORE (R) on Sunday after she suggested he could be impeached if he wins the presidential election. 
“Why don’t you all show Joni Ernst just how smart you are by caucusing for me?” Biden joked to a room full of supporters, to loud applause.
“I promise if you stand with me, we will end Trump’s reign of hatred and division,” Biden said.
Click Here: Fjallraven Kanken Art Spring Landscape BackpacksBiden was occasionally interrupted by protesters urging him to shun contributions from fossil fuel companies. The former vice president was speaking to a crowd of more than 1,000 supporters at a middle school in Des Moines, Iowa, one of the largest crowds his campaign has attracted to date.

His remarks came in response to comments Ernst made in an interview with Bloomberg, where she suggested that Biden could be impeached if elected for supposedly “turning a blind eye to Burisma because his son was on the board making over a million dollars a year.”

“I think this door of impeachable whatever has been opened,” Ernst told the news outlet. “Joe Biden should be very careful what he’s asking for because, you know, we can have a situation where if it should ever be President Biden, that immediately, people, right the day after he would be elected would be saying, ‘Well, we’re going to impeach him.’”

The senator previously suggested that the impeachment trial could be used to hurt Biden’s chances in the Iowa caucuses on Monday.

John Bowden contributed to this report.