lessee now.

"I wouldn't be surprised if ..." usually means "I expect this to happen."

" y is not acceptable to x" means "x is angry about y".

So,
>>I would not be surprised if we don't have interruptions on a scale that is not acceptable to most Americans

> I expect we will not have interruptions on a scale that most Americans will be angry about.

So, there will be interruptions but most people in the US are not going to be much bothered about them. That's what he said. Whether that is what he meant, or if he did mean it, whether it's true are outside the scope of the question asked.

Bingley

Bingley