The definition for "anti-american" is to be "hostile to the interests of the United States; opposed to Americans".  Burke and Schwab aren't opposed to Americans - they are opposed to Trump.  Burke and Schwab aren't hostile to the United States.

Trump is opposed to American dissenters (like me) and believes that our opinions should be blocked throughout the land -- just like he blocked the famous to populist dissenters on Twitter (which is a Presidential Record, like the .gov website -- he cannot do that).