yes-yes/ Congress is empowered to regulate, enact all appropriate legislation,
to promote the growth and insure the safety of, to foster protect control, and
restrain interstate commerce. Thus they may control all matters that have a “close
and substantial relation to interstate traffic”also “whenever the interstate and
intrastate transactions are so related that the government of the one involves the
control of the other, it is congress not the state that is entitled to prescribe
the final and dominant rule”