Lily Allen has had her US work visa cancelled after arriving at Los Angeles airport, reports BBC.
The 22-year-old, who is due to tour America in September, had flown in for the MTV Video Music Awards launch and to film a music video with Kanye West.
She was held at the airport for five hours in connection with an arrest when she allegedly assaulted a photographer in London in June.
Following the arrest she was cautioned for common assault.
Speaking to the Daily Mirror Lily said, "I am trying everything I can to sort this out."