Russia may ban American corn and soybeans

That dry rot, if it exists, and I assume the problem is real, can cost Russia a lot of money in healthcare if people get sick from eating it.  Without knowing exactly what causes the dry rot, I can't say how bad the problem is.  The cost of the increased healthcare could be more than what they are paying for the corn.

The US bans imports from other countries lots of times if it is found to be defective product.  Look at how many kids got sick from lead paint on toys.  China has banned a lot of American grown foods, so has half of Europe.  China refused all shipments of wheat from the US not long ago because it contained Genetically modified wheat.  Some farmers still had wheat grown from test farm wheat seeds they saved and planted.  They sold the wheat they grew after the testing was all done and over.  That wheat was supposedly banned in the US but was mixed in with our wheat.  The problem has been corrected, the government tracked down all of the seeds.  I guess China is buying wheat again.

It probably is a real concern. 

I don't think Russia does not import any GMO foods for human consumption.  In fact, most of Europe has bans on it's use for human consumption and also the majority of Asia.  There may be more places in the world too.  Actually the USA does not allow human consumption on GMO corn sold to eat on the cob.  No sweet corn is sold GMO in stores or restaurants that I know of.  Now, processed oils and food for livestock and ethynol can be GMO corn.  Soy has less regulations.  I read this a while back, things could have changed in the last five years or so.