Former Vice President Joe Biden responded to Donald Trump’s accusation he had “forgotten” his home state of Pennsylvania by moving to Delaware.

“I’ve never forgotten where I came from,” Biden wrote on Twitter. “My family did have to leave Pennsylvania when I was 10 — we moved to Delaware where my Dad found a job that could provide for our family.”

Biden argued that Trump had no understanding of what it was like to move for economic reasons like his father did.

Biden hearkened back to one of his favorite campaign themes, telling the story of “the longest walk” of a parent who goes to tell his family that they are moving because they lost their job.

“This story isn’t unique to the Bidens,” he said. “Too many people around this country have had to make that walk.”

Trump told Pennsylvania voters at a rally on Monday that Biden had largely forgotten the state.

“He left you for another state and he didn’t take care of you because he didn’t take care of your jobs,” Trump said. “He let other countries come in and rip off America.”

Yesterday, Trump tried to attack me at his campaign rally by saying I abandoned Pennsylvania. I’ve never forgotten where I came from. My family did have to leave Pennsylvania when I was 10 — we moved to Delaware where my Dad found a job that could provide for our family. — Joe Biden (@JoeBiden) May 21, 2019

Trump doesn’t understand the struggles working folks go through. He doesn’t understand what it’s like to worry you will lose the roof over your head. He doesn’t understand what it’s like to wonder if you’ll be able to put food on the table. — Joe Biden (@JoeBiden) May 21, 2019

And he doesn’t understand that the longest walk a parent can make is up a short flight of stairs to their child’s bedroom to say, honey, I'm sorry. We have to move. You can’t go back to your school. You won’t see your friends because Daddy or Mommy lost their job. — Joe Biden (@JoeBiden) May 21, 2019