Here are the materials in Miccosukee Tribe v. United States II (S.D. Fla.):
DCT Order Denying Miccosukee Motion to Quash
US Motion to Dismiss Petition to Quash
Transcript of Deposition of IRS Agent
We posted materials on the discovery request to depose the IRS agent here.
Materials on Miccosukee I (tax years 2006-2009, now on appeal to the CA11) are here. The key difference between I and II (other than tax years) is the Tribe’s claim that the government sought the financial documents for an improper purpose.