I'm a US/UK national. I travel from the UK to the US every year. You're asked, 'Are you a US citizen?' on the plane, and given the appropriate form to fill in and sign. It's very clear, all of it, plants, goods, etc, that you have on your person or in your bags. You have to enter your US passport number and other information. And before you sign, a paragraph, that if you don't declare and you are found otherwise, that it is a federal crime and you are subject to federal prosecution, and then you sign it or don't.
As for the bankruptcy, that burns me up, too. We had to file for bankruptcy, after DD1 died. We had FA, that's why it's there. We felt like shit, it was personal and fell under the £15k limit for indigent people, but we had no other choice, as we were indigent. We didn't hide assets, we didn't have any. To do otherwise makes governments tighten laws for honest people who have no other choice, particularly in America, where one of the most common reasons for bankruptcy is medical debt due to their healthcare system. Hiding a load of money is theft, and I reckon a lot of those people she ran up debts on were small service providers of costumes and such goods, those people run on very narrow margins. But even if not, it's theft to hide money and then claim you have none to pay, and even if you pay it back, you wouldn't have if you weren't caught out.
As for black men in America, they're probably the most likely to be fucked over or even killed by the American justice system, there are many statistics that bear this out, so it's really rich to state this person was prosecuted for her race, gender and weight.