The FDA discovers that, during the public comment process, Robins & Robins bribed one of the members of the administrative panel that decided to pull the rule from consideration. The member of the panel was removed and is being charged criminally. As a result, the FDA immediately implements an emergency order that puts into effect the "tracking bar" requirement and makes the rule retroactive, but only to Robins & Robins. Provide two arguments Robins & Robins can make to have the rule determined to be invalid under the Administrative Procedures Act. Explain your answer.