William H. Macy Defends 'Shameless' Son Ethan Cutkosky After DUI

[[tmz:video id="0_to1ldy0d"]] William H. Macy's paternal concerns aren't limited to his real life kids -- he also cares deeply about Ethan Cutkosky, his TV spawn who just got busted for DUI. We asked the "Shameless" dad about Ethan's arrest, and he…