ProPublica has a nice investigative piece on which states have already run out of money to fund their respective unemployment insurance programs. Several other states, including Idaho, are on the brink running out of funds.
Thanks to a historical compromise, each state has its own unemployment insurance system, and they come in 51 different flavors ¬– one for each state and Washington, D.C. (Puerto Rice and the Virgin Islands technically make it 53.)
Montana is in good shape ($222,630,000 trust fund balance), while Michigan, not so much (more than $2 billion in the hole).