You have no idea what would or would not have been legal.

The payment was totally unrelated to the campaign and did not go in or out of a campaign account. It was a private matter between/among consenting adults. There's no way it could or should have been reported to the Federal Election Commission.

Cohen caved like a canary, but he does not determine campaign finance law.

What really happened is the Feds railroaded Cohen with a bogus add-on charge in a cheap and flimsy attempt to then get at Trump. Cohen didn't fight the bogus campaign finance violation charge because he was buying forbearance by spilling his guts. He didn't "take a bullet for the President".

Cohen was repaid by the Trump Organization, not the Trump Campaign.

If anything, Daniels should be convicted of blackmail and extortion. Same for the other hussy.