Biden lost the election, but he's not powerless or irrelevant. And he's changing every thing to 5hi7.
Biden had more votes (real or fraudulent don’t matter in USA) than Trump. The electoral college certified Biden as winner. What you think is irrelevant in United States of America.
Therefore Biden lives in White House now and not Trump.
Biden is the C-in-C, not Trump.
Every bill passed by congress requires Biden’s signature, not Trump’s. But congress can overrule Biden with 2/3 majority.