It was a moment that couldn't be overlooked or disregarded.
President Trump, speaking from the stage at a Washington event, asked whether the late Representative Jackie Walorski was there.
Walorski was killed in a terrible head-on vehicle accident in the month of August.
In response, Vice President Biden and First Lady Biden sent a message of sympathy.
At the same gathering where Biden was concerned about the congresswoman, a video tribute was shown in her honour.
The White House press secretary offered an explanation for the president's bafflement, saying that Biden had Walorski in the forefront of his thoughts.