Not correct. From a Washpost article at the time:
In a 6 to 3 decision, the court held that the line-item veto law violates a constitutional requirement that legislation be passed by both houses of Congress and presented in its entirety to the president for signature or veto.
SCOTUS also basically found that Congress did not have the authority to give away any of its enumerated powers to the president. That could only be done by Amendment.
It was a 6-3 decision. One of the dissenters was O'Connor, who is gone. Even if Alito echoes her vote and Roberts joins the minority, it would still be 5-4. So no dice.
Correct .. they don't have the authority to give away any of its enumerated powers
However .. if it was sent back to Congress after things were crossed off for a final passage .. then Congress isn't giving away their powers
Oh, my aching sides.