If anything recognizing the authority of the Roman emperor could be seen as going against Roman Catholicism, as many of the Roman Emperors were pagans during the rise of Christianity. Not to mention, it has no basis in religion, it is a political matter.
Harry S. Truman <em>signed the executive order 9981, which established equality of treatment in the U.S. armed forces regardless or race or religion.</em>
Taft-Hartley Act intended to limit the power of labor unions and their leaders in terms of negotiating salaries and exercising the right to strike. Many of these statutes are still in place.