Las Vegas GP: Yuki Tsunoda interrogated in his pajamas on U.S. arrival

"Luckily, they let me in after a couple of discussions," he said. "Well, a lot of discussions, actually ... I nearly got sent back home."

Tsunoda said he had been travelling with his physio but had to go through immigration on his own and was then taken to a room for questioning despite having the correct paperwork.

The Las Vegas race comes after a three-week break following a round in Brazil and Tsunoda had flown in ahead of the team for a promotional event.

"I was wearing pajamas, so maybe I didn't look like an F1 driver," added the 24-year-old.