Donald Trump should have released his tax returns when he was running for president, and in not doing so he was deceptive, sleazy and in violation of a long-standing tradition that fosters transparency and honesty. He obviously hoped to hide unfavorable information from the voters.
Despite that, I don't believe the House Ways and Means Committee should release his tax returns to the public now.
The committee fought a long battle all the way to the Supreme Court to obtain copies of the returns. It argued that it needed them to evaluate the effectiveness of an IRS program that audits the tax filings of presidents.
