Salmonella Again?

Seems there is yet another Salmonella poisoning warning. I wonder, why so many in the last few months? 1st it was Spinach, then Eggs, then Tomatoes... Now it is Pistachios. I have to ask, why are the foods we get from overseas so contaminated? This rarely happened when we bought US foods. Could it be mishandling? Could it be by design? I mean on purpose? Time to cut the ties from many of these low rent, low quality countries that employ slave labor to feed America.