WASHINGTON (AP) — The Internal Revenue Service has provided Congress with another video featuring its employees, this one showing about a dozen of them practicing dancing on a stage. The video, which lasts under three minutes, comes weeks after it was revealed that agency workers produced two other videos, parodying the "Star Trek" and "Gilligan's Island" TV shows. It also comes with the IRS under fire for targeting conservative groups applying for tax-exempt status for tough scrutiny. All three videos were provided in response to a request by a senior member of the House Ways and Means Committee, Louisiana Republican...