Not any more than I am on people who believe the federal government was created to be used as a vehicle to crush states that have opinions different from theirs.
Kind of interesting that you would use an example where someone powerful targets those less powerful to make them do as they say.
states are also governments that can crush people and strong people can crush weaker people. So you have to restrain the federal govt but there must also be a restraint against oppressive states and people
Then you are thoroughly unfamiliar with the United STates Constitution.
"No person shall be held to answer for a capital, or otherwise infamous crime, unless on a presentment or indictment of a Grand Jury, except in cases arising in the land or naval forces, or in the Militia, when in actual service in time of War or public danger; nor shall any person be subject for the same offence to be twice put in jeopardy of life or limb; nor shall be compelled in any criminal case to be a witness against himself, nor be deprived of life, liberty, or property, without due process of law; nor shall private property be taken for public use, without just compensation."
The constitution is the Supreme Law of the Land. If California makes murder legal they have broken the Law of the Land and the feds would have the power to set things right.
Perhaps I misunderstood you because the notion that a state can ignore murder is not one dervived from the United States Constitution.