The New York Post is all over the IRS investigation of Rev. Al Sharpton’s National Action Network. A few details:

. . . . Anheuser-Busch, the brewer of Budweiser and Michelob, confirmed yesterday that it received a federal subpoena in connection to its charitable giving to Sharpton’s National Action Network. . . . Sharpton blasted the subpoena as a “fishing expedition” and said his donors are proud of their financial support. The St. Louis-based corporation donated between $100,000 and $499,000 to NAN in 2007 alone, according to its Web site, but declined further comment about its relationship with Sharpton. A knowledgeable source said several other corporate donors received or would soon receive subpoenas. Sharpton himself, his business entities and his nonprofit civil-advocacy group owe millions in back taxes, documents show. . . . Last year, state Attorney General Andrew Cuomo began a probe of NAN because it failed to follow state financial-disclosure regulations for nonprofits. Cuomo’s office has since turned over its NAN file to the US Attorney’s Office. As of 2006, the most recent year that financial documents for the group are publicly available, it owed $1.9 million in payroll taxes and penalties. . . . Sharpton threatened boycotts or protests against corporations while simultaneously soliciting donations and sponsorships of NAN events, The Post detailed. Personally, Sharpton owes $931,397 in federal taxes and $365,558 in New York City taxes, according to an IRS lien.