The reason the court summarily affirmed was the rather obvious reason:
We have no doubt that the documents retrieved pursuant to the government's search were exempt from production as "records or information compiled for law enforcement purposes" the production of which "could reasonably be expected to interfere with enforcement proceedings," 5 U.S.C. § 552(b)(7)(A); see also 26 U.S.C. § 6103(e)(7). Radcliffe has essentially conceded as much, asserting that this FOIA suit stems from the Internal Revenue Service's ongoing investigation of whether and to what extent Radcliffe has used undeclared offshore credit card accounts to shelter his income and avoid his federal tax obligations. By letter dated July 25, 2007, Radcliffe, through counsel, stated that his "FOIA suit became necessary due to the IRS' failure to provide [information relating to the tax audit] willingly." Letter from Frank Agostino to Gary A. Nichols, Internal Revenue Service (July 25, 2007).