Why is Commonwealth Bank closing accounts?

Bank, National Association 2 BHM Bank 6 CENTRAL Bank 6 CLB The Community Bank 10 Community National Bank, Monmouth 3 FARMERS & MRCH Bank CENT CA 8 Farmers State Bank of Blue Mound 1 FIRST B&TC 5 First National Bank, Taylorville 12 First State Bank of Bigfork 3 Foundation One Bank 17 Frontier State Bank 10 Gulf Coast Bank 12 Leighton State Bank 3 OSB Community Bank 10 State Bank of St. Jacob 10 SUMMIT Bank 8 VISTA Bank 9 West Union Bank 25 Willamette Valley Bank 8