also tonight, republican darling dr. ben carson apologized for what he said earlier today about gay sex in prison and it is a truly remarkable apology. supreme court arguments have just concluded on a legal challenge that goes to the heart of the president's affordable care act. >> health care under attack! stand up fight back! >> 7 million people could lose their subsidies. >> the question for the supreme court is who gets that subsidisome >> it's unwise to draw conclusions based on the questioning of the justices. >> we turn now from the supreme court to the federal court. the federal courthoused in boston. >> the bombing suspect's defense lawyer made a stunning admission. >> it was him. that statement not from prosecutors but the defense attorney. >> this whole trial is not about guilt or innocence. the whole trial is does he live or die? >> our investigations show that ferguson police officers routinely violate the fourth