FLAGSTAFF, Ariz. (AP) — The U.S. Treasury Department says it’s unsure it will be able to disburse $8 billion in coronavirus relief funds to Native American tribes by a Sunday deadline. The department says it’s still working to determine whether Alaska Native corporations are eligible for a share of the funding. Meanwhile, the list of tribes suing the federal government to try and keep the money out of the hands of the corporations is growing. The tribes say the funding should go only to tribal governments. The Interior Department and the Alaska Native corporations say the plain reading of the CARES Act makes the corporations eligible.