Donald Trump insists he did nothing wrong by failing to disclose his foundation’s $25,000 donation to a political group linked to Florida’s attorney general, Pam Bondi. After all, he says, he paid a $2,500 fine in an effort to put the matter to rest. “A minor issue,” Trump spokeswoman Hope Hicks told NBC.

That’s disingenuous spin of the first order. It’s also illegal. The Donald J. Trump Foundation, which is organized under section 501(c)(3) of the IRS code, clearly violated its tax-exempt status by making the contribution — a fact brought to light in March by Citizens for Responsibility and Ethics in Washington. But this is more than an accounting error. There’s a whiff of scandal that demands full attention from voters who might otherwise be trying to make their post-Labor Day peace with the fact that Trump is now the Republican standard-bearer.

It seems more than coincidental that the donation from the foundation was made on Sept. 17, 2013, four days after reports emerged that Bondi’s office was mulling an investigation of fraud charges against Trump University. Bondi never pressed ahead with any probe, and endorsed Trump’s candidacy. Campaigning in Ohio on Monday, Trump said: “I’ve just known Pam Bondi for years. I have a lot of respect for her. Never spoke to her about that at all.” In June, however, Bondi’s spokesperson told the Associated Press that she personally solicited the political contribution around the time her office deliberated joining the fraud investigation. So which is it?