[Alberta's Child]

Of course Trump knew. Watch the clip you posted. THE REPORTER TOLD HIM WHEN HE ASKED THE QUESTION.

[Karl Spooner]

I don’t think he comprehended. Congress didn’t ask him so it has to be a misstatement for him to say that he will decline. He is speaking as if they asked him.

[Karl Spooner]

For ref: It appears Trump has no prerogative to decline which is what I am basing my comments on.

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U.S. Code 6103

(f) Disclosure to Committees of Congress

(1) Committee on Ways and Means, Committee on Finance, and Joint Committee on Taxation

Upon written request from the chairman of the Committee on Ways and Means of the House of Representatives, the chairman of the Committee on Finance of the Senate, or the chairman of the Joint Committee on Taxation, the Secretary shall furnish such committee with any return or return information specified in such request, except that any return or return information which can be associated with, or otherwise identify, directly or indirectly, a particular taxpayer(s)(return) shall be furnished to such committee only when sitting in closed executive session unless such taxpayer otherwise consents in writing to such disclosure.