“I’ve had my ups and downs. My fair share of bumpy roads and heavy winds. That’s what made me what I am today. Now I stand here before you. What you see is a body crafted to perfection. A pair of legs engineered to defy the laws of physics and a mindset to master the most epic of splits.”
That’s not how diplomatic immunity works. A nation is welcome to ban entry to any foreign national.
Diplomatic immunity is for crimes commited within a foreign nation. It’s also worth notting that the immunity can be revoked as well by the nation that said foreign national is from, there by allowing them to be arrested and tried under the local justice system.