From Wikipedia:
“In United States law, depraved-heart murder, also known as depraved-indifference murder, is an action where a defendant acts with a "depraved indifference" to human life and where such act results in a death. In a depraved-heart murder, defendants commit an act even though they know their act runs an unusually high risk of causing death or serious bodily harm to a person. If the risk of death or bodily harm is great enough, ignoring it demonstrates a "depraved indifference" to human life and the resulting death is considered to have been committed with malice aforethought.[1][2] In some states, depraved-heart killings constitute second-degree murder,[3] while in others, the act would be charged with varying degrees of manslaughter.[4]“
I do believe that this defines what our Republican Senators and Representatives would be guilty of if they manage to repeal ACA and/or make TrumpCare law.