FTC sues to block $4B merger of mattress firms Fox BusinessFTC unanimously moves to block $4 billion merger of mattress giants CNNFTC unanimously votes to block $4B Tempur Sealy, Mattress Firm merger New York Post FTC to challenge Tempur Sealy’s acquisition of Mattress Firm AxiosUS to block Tempur Sealy’s $4 bln buy of retailer Mattress Firm Reuters