JD Vance and his three-year-old daughter Mirabel were out walking in his home state of Ohio when they came into contact with pro-Ukraine protests.
He claims the demonstrators made his toddler “anxious and scared”. They claim “everything he said was a lie”.
Here’s what we know about the vice-president’s Cincinnati run-in.
Footage of the encounter shows the vice-president pushing his three-year-old in a pram and calmly engaging with protesters, who accused him of “selling out” Ukraine and having “no integrity”.
“Today while walking my three-year-old daughter a group of “Slava Ukraini” (glory to Ukraine) protesters followed us around and shouted as my daughter grew increasingly anxious and scared,” Mr Vance said after the altercation.
He continued: “It was a mostly respectful conversation, but if you’re chasing a three-year-old as part of a political protest, you’re a s—t person.”