Of course not.   We have a president who must act within the law which is what they are asking about.  We do not have a king.  Congress is a coequal branch of government and has oversight over the executive branch.  Given that there is not precedent at all for what is being ordered, Congress is within its rights to ask about the process AND ensure that all laws the President is bound to follow are adhered to. Treason?  No.  We don't have a king, we have a president, a president who must follow laws including this one.  https://www.justice.gov/opcl/privacy-act-1974