The FBI.
The FBI has been feeding Democrats and the media manufactured "inside" information about Trump. That's why they believe it. That's why they're convinced Trump colluded with Russia.
How did the FBI, our “premier l/e agency” stray so far from its motto of fidelity, bravery, and integrity?
It has been involved in reprehensible activities:
<><>treating taxpayers’ J6 Open House as criminals
<><>creating an “insurance policy” against the peaceful transition of power,
<><>evidencing a virulent partisanship against Trump
<><>falsifying documents in unnecessary probe of Trump’s campaign,
<><>colluding against Trump,
<><>illegal attempts to prevent a Trump win,
<><>targeting parents as domestic terrorists for protecting kids from lib/prog school board atrocities,
<><>and so on and so forth ad infinitum, ad nauseam.
The answer is in the question...... its motto of fidelity, bravery, and integrity are attributes foreign to Obumma, Bidung and Democrat powermongers.