Scientific Fact- methane from the livestock industry is the biggest contributor to greenhouse gas on our planet.  Scientific Fact - if we reduce our meat consumption by 50% worldwide these emissions would be reduced.

That doesn't mean the president should be able to make an executive order to re-zone livestock agriculture land into park land.  That is the point this author has made.  One group doesn't get to have their way without the due-process of the law.  

As for your "in a year from now..." comment, that is not the way it works.  The designation is permanent.  We don't imprison people for crimes they maybe committed and say, "if it turns out we wrongfully imprisoned this person we'll just let em free"