What implicit warning is contained in Senator Gravel’s introduction?

The true strength of rulers and empires lies not in armies or emotions, but in the belief of men that they are inflexibly open and truthful and legal. As soon as a government departs from that standard, it ceases to be anything more than “the gang in possession,” and its days are numbered

Explanation:

he uses H.G. Wells words to explain when a goverment lies to its people it is nearing an end. http://www.archipelago.org/vol10-12/gravel.htm

cold

very very cold

a change of venue is the legal term for moving a trial to a new location. a change of venue request because venue is improper means that the removing defendant believes that the case may not be in that venue because it is improper under procedural rules.