The IRS is back in Republicans’ crosshairs following a ProPublica report based on the confidential tax records of the wealthiest Americans. Republicans have long disliked the tax-collection agency, and have been critical of President Biden’s proposal to give the IRS significantly more resources. Now, GOP lawmakers are amplifying their attacks on the IRS in light of an unauthorized disclosure of tax data to ProPublica, arguing that it undermines taxpayers’ ability to have confidence in the agency. “This is an astonishing breach of trust that should make taxpayers very concerned,” Rep. Kevin Brady (Texas), the top Republican on the House Ways...