US President-elect Joe Biden says the White House has so far been "sincere" in helping his transition to power.
"It has not been begrudging so far, and I don't expect it to be," he told NBC News in an interview.
He spoke as he unveiled his choice of top officials for when he takes over from Donald Trump in January.
Mr Trump finally agreed to allow the formal transition process to begin on Monday, nearly three weeks after the presidential election.
What was Biden's message?
Speaking to NBC's Nightly News, he confirmed he had not yet spoken to the president but added that he did not expect the beginning of his term to be affected by the delay in beginning the transition.
"It's a slow start but it's starting and there's two months left to go, so I'm feeling good about the ability to be able to get up to speed," he said.
There were, he said, plans for him to meet the Covid-19 task force in the White House about vaccine distribution and access.
"America is back" and "ready to lead the world, not retreat from it", he said when he introduced his future team earlier on Tuesday in Wilmington, Delaware.