Here’s an idea: Take the money you’d spend on a legal action against the US and spend it on stopping illegals from using your boarder as a launch point for smuggling people and drugs into the US.
Indeed, launch such a suit and we will launch one against you for drug trafficking, suing you for $1 million for each drug-related death over the past 50 years.
Put that in your pipe and smoke it.
Unless it's drugs.