

That’s actually a much bigger deal for Mangione at this hearing than the Miranda warning issue.
That seems like more of an uphill battle. Even if the search incident to arrest is illegal, the defense also has to prove that the feds would not have inevitably gotten the search warrant for the backpack anyway.
The sequence of events with the backpack was:
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12 minutes into the McDonald’s interaction, the cops moved the backpack some distance away from him, and put themselves between Mangione and the backpack.
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While still in the McDonald’s a local cop opened the backpack, searched all the inside compartments, and found the key items, including the gun. The cops say this was an inventory search incident to arrest.
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She then put the gun back in the backpack and zipped it back up. This is a clue that the cops were actually worried about the legality of the search.
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They took the whole backpack back to the police station.
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The same cop then searched the backpack again at the police station, and magically found the same gun that she had put back into the backpack. Still no warrant.
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7 hours later, Altoona PD applied for and received a warrant to search the backpack.
Despite the preposterousness of this sequence, if the prosecution can show that the team that applied for the warrant was not excessively tainted by prior knowledge of the gun or notebook, they can probably still use the evidence.
I don’t know what the law is in Pennsylvania, but some states have a law that you must present ID on request if you have it. Nearly all jurisdictions require you to correctly state your name and address to police on request.
And the police here used a ruse that this was all just a McDonald’s loitering complaint. The cop admitted on the stand that the loitering thing was a lie. But that’s okay. Remember: the cops are allowed to lie to you, but you are not allowed to lie to the cops.
Remember also: stating the false name orally is a separate crime from the forged instrument.
So bottom line, the failure to Mirandize could suppress the statements where he confessed to the fake ID and to the fake name. But it’s not going to toss those charges. And it doesn’t suppress the action of handing over the ID, because that’s not a statement.
So there’s a pretty strong case for the ID charge even without the statements.