(CNN) President Donald Trump attacked Democratic Rep. Debbie Dingell and her late husband, Rep. John Dingell, during a rally on Wednesday, implying the former congressman was "looking up" from hell.

"Debbie Dingell, that's a real beauty," Trump said of the congresswoman, noting he was watching her on television during impeachment proceedings.

Trump said that he gave the family the "A-plus treatment" after John Dingell died, and that the congresswoman, who now holds his seat in the House, told Trump during an emotional call following John Dingell's funeral that her husband would have been "thrilled" by the respect shown for him during his funeral and "he's looking down" on the ceremonies.

"Maybe he's looking up," Trump said, drawing some moans and groans from those in Battle Creek, Michigan, about two hours away from Debbie Dingell's district. "Maybe, but let's assume he's looking down."

Trump's comment about John Dingell, the longest ever serving congressman, fell mostly flat on a crowd in an important swing state that has long revered the former dean of the House. John Dingell was an iconic figure in Michigan who was admired across party lines, and was one of the most popular political figures in the state during his lifetime.

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