As we have reported many times since 2014, America has a major problem with its wheat supply. Virtually all of the wheat grown in the northern climates is contaminated.
There is currently no GMO wheat grown in the U.S., even though from time to time a farmer will find wheat growing that does not die when sprayed with glyphosate herbicides. These are no doubt rogue varieties of wheat left over from GMO test plots years ago, but there is currently no commercially grown GMO wheat.