Corn opened lower but managed a quarter penny higher close, and hogs tried to follow cattle higher at the open but ended lower for a third session in a row, but the rest of the pack ended the day where it started with equally small changes.Fundamentals are helping corn, wheat and cattle, and some expectation of trimmed production in this Friday’s WASDE is also providing support.   A clipper system arrives this weekend in the U.S., bringing snow and milder conditions to the north while temps stay colder to the south. This is followed by another winter system next week. The focus on dry, hot conditions impacting Argentina’s crop is offset by meteorological predictions that the impact from this year’s La Niña will be “relatively weak...