Not Ted Cruz or John Kasich, who have posted several years of summary pages from their Form 1040s — which reveal very little about sources of income, deductions, charitable donations or efforts to use loopholes, shelters and other means to reduce tax liability. Not Donald Trump, of course, who has excused himself from this traditional standard of probity because, according to his attorneys, some of his recent returns are undergoing an IRS audit. (It's a bogus excuse.)