ANN ARBOR, Mich. (10/6/10)--MidWest Financial CU members have officially approved a merger of their Ann Arbor, Mich.-based credit union with Dearborn, Mich.-based DFCU Financial--the state’s biggest credit union by total assets. First announced in June, the merger was approved by 92% of MidWest Financial members who voted (annarbor.com Oct. 4). DFCU has $3 billion in assets, more than 219,000 members and 530 employees. MidWest Financial had roughly $177 million in assets, nearly 18,000 members, four branches and 70 employees. DFCU is expected to keep MidWest’s employees as DFCU enters the Ann Arbor market, the website said.