Constitutional provisions do not apply equally to all people in the United States
The ruling was also unconstitutional regardless of whether or not the Alien Enemies Act was being used improperly because all of those being deported were undeniably in the country illegally. Unlawfully crossing into the United States without navigating proper immigration procedures according to federal immigration laws that are on the books is a crime, and the President of the United States has the authority to deport those individuals no matter what. That is the reason for the existence of ICE and the Border Patrol. The Constitution grants the issue of immigration to the federal government and the job of the President, using his executive departments and agencies, is to carry out the laws of the United States. Immigration law states that unlawful entry into the United States is a crime, and therefore the President’s job is to execute those laws by deporting the persons who broke federal law when they entered into the country unlawfully.
A part of the argument being used by those using lawfare against President Trump regarding immigration is that while those “migrants” may be “undocumented,” in order to deport them they have a right to the due process of law. The Constitution is, after all, supportive of due process and the concept that everyone is “innocent until proven guilty.”
That flawed argument, however, fails to recognize that there is a difference between those who fall under the full jurisdiction of the United States (citizens), those who are in the United States under conditional terms (holders of documents like a resident alien card, student visa, or other kind of visa) and those who have entered the country unlawfully. Constitutional provisions do not apply equally to all people in the United States. The Preamble of the Constitution, after all, tells us that the document was presented for “We the People of the United States,” not in the United States. Naturalization and migration is addressed in Article I, Section 8 and Section 9, giving to Congress the authority to make the rules regarding those issues through legislation, including who may be prohibited from entering and what the protocols regarding immigration would look like. Congress has done that. In Article II of the Constitution the President is “vested” with the executive power, and is called to “faithfully execute the laws of the United States,” which is accomplished through the various departments and agencies that fall under his supervision.