Editorial: The IRS found a way to make ‘dark money’ spent on politics even darker

Under a perverse interpretation of federal law, tax-exempt nonprofit organizations supposedly devoted to “social welfare” can spend large amounts of money to influence elections without publicly disclosing the identities of their donors. But instead of cracking down on the use of “dark money” for political purposes, the Internal Revenue Service has decided to stop requiring these groups to reveal even to the government the sources of their funding.