That's why it has been standard practice for Presidential candidates and aspirants to release taxes and other financial disclosures before elections, and why it was such a big deal that Trump didn't.
[1] https://www.nytimes.com/2019/02/28/us/politics/jared-kushner...
To be clear: we absolutely should require that elected officials disclose their finances. But we shouldn't require them to be vetted through a mostly unaccountable process after they've been elected.
https://www.nytimes.com/2019/02/28/us/politics/jared-kushner...
Security clearances can be denied for financial irresponsibility, having “significant debt” isn’t necessarily financial irresponsibility.