Associated Press:

The conference spending included $4 million for an August 2010 gathering in Anaheim, Calif., for which the agency did not negotiate lower room rates, even though that is standard government practice, according to a statement by the House Oversight and Government Reform Committee.

Instead, some of the 2,600 attendees received benefits, including baseball tickets and stays in presidential suites that normally cost $1,500 to $3,500 per night. In addition, 15 outside speakers were paid a total of $135,000 in fees, with one paid $17,000 to talk about "leadership through art," the House committee said.

IRS spokeswoman Michelle Eldridge said Sunday that spending on large agency conferences with 50 or more participants fell from $37.6 million in the 2010 budget year to $4.9 million in 2012. The government's fiscal year begins Oct. 1 the previous calendar year.

On Friday, the new acting commissioner, Danny Werfel, released a statement on the forthcoming report criticizing the Anaheim meeting.

"This conference is an unfortunate vestige from a prior era," Werfel said. "While there were legitimate reasons for holding the meeting, many of the expenses associated with it were inappropriate and should not have occurred."