Yes, PDJT does have the authority, but that is hampered by the judiciary bringing suits to stop him. PDJT is a law and order President:
From the White House Release:
Catch and release loopholes, which are the result of statutory and judicial obstacles, encourage illegal immigration into the U.S. and prevent the removal of aliens once they are here.
Currently, the Department of Homeland Security (DHS) can only detain UACs for a few days before releasing them to the Department of Health and Human Services (HHS) for resettlement into the United States.
Immigration enforcement efforts are further hamstrung by the fact that current federal law exempts UACs from non-contiguous countries, such as El Salvador, Guatemala, and Honduras, from being promptly returned to their home countries. This results in nationals from these and other countries entering and never leaving.
“Catch and release loopholes, which are the result of statutory and judicial obstacles, encourage illegal immigration into the U.S. and prevent the removal of aliens once they are here.”
Absolute unadulterated bullsh!t. He has total authority to seal the border and refuse all entry to anyone. The courts don’t have a say in national security.
No one is buying this crap.