@foxnews: "My mom even thinks it's the greatest thing ever... Why would I back down?" Vanilla Ice makes it clear: he's not going anywhere and WILL perform at the Great American State Fair on the National Mall for America's 250th anniversary celebration. The '90s pop icon pushed back on critics, saying he's proud to take part in the historic event and calling it an honor to celebrate the country's milestone birthday. "It's still the greatest country in the world." "For me, man, this is a great celebration. I'm honored and look forward to getting everybody dancing."