Well US diplomats may be getting mad about Japan banning US beef, but it's almost certainly just US cows that have a right to get mad about anything. The state department is using smoke and mirrors by claiming the tiny Japanese herd has ten times as many mad cow cases as all of the US herd. What it fails to emphasize is that Japan tests every single cow but the US only tests a tiny fraction.
If you read anything about factory farming in the US you'll find they still feed cow bits like blood to other cows, or other cow bits to pigs and chicken that are then fed to cows again. Furthermore many studies have shown that the stun guns used on cows basically liquify the brain and result in brain bits through the entire body of the cow after slaughter - including the muscle which is what most of us end up throwing on the BBQ. The only way to be safe these days is to eat beef from farms that never had BSE and never use any animal products to feed their cows.
I'm not going to bother giving links, just Google "mad cow usa" and you'll find hundreds of them. Do you think the Japanese thought about doing that? Maybe they even read the book "Mad cow USA" ???
The main reason I'm particularly indignant about this is because the United Kingdom was held up as the poster child of mad cow disease. They basically got rid of every single cow in country because of it - had to burn and bury the lot. However over in mainland Europe mad cow disease was also widely diagnosed, but no one ever did anything about it because the governments chose to keep quite about it an write-off any reports has being caused by imported cows. It appears the same is happening in the USA - they used to blame a bunch of British cows imported in the 80s that mysteriously vanished. Now its the Canadian cows that are to blame...
I'm almost certain that if the USA started mandatory testing of all cows we would soon uncover hundreds, if not thousands of cases countrywide. However the FDA isn't going to do that. I've heard that of those they do test they only test "downer" cows that go down at the slaugher house - not ones already down by the time they arrive which is very common. And ones that go down before they are even sent to slaughter? Who knows what happens to those.