Edward A. Clark with those opposed to the liberal elements, led by Texas Senator Ralph Yarborough. After the assassination of John F. Kennedy in 1963, Johnson became president. In 1965, Johnson appointed Clark as the US ambassador to Australia. In 1972, Clark supported Richard Nixon for president over George McGovern. In 1974, President Nixon appointed Clark to the General Advisory Committee of the United States Arms Control and Disarmament Agency. Later, Clark supported Ronald Reagan, who became president. In 2003, Barr McClellan, an attorney who had been employed by Clark's law firm in Austin, published "Blood, Money & Power: How LBJ Killed JFK".
Making a Murderer in law enforcement had made a hole in a blood vial of Avery's to plant blood on the scene of the crime. However, Kratz claims the filmmakers failed to address a sworn, written statement of a nurse that she was the one who made a hole in the blood vial when she had drawn Avery's blood. The filmmakers have said that they gave prosecutors an opportunity to answer questions, but that Kratz refused invitations to be interviewed for the series. Demos and Ricciardi said they believed the documentary was fair and included the most significant evidence of the six-week trial,