FedEx Corp. has tapped longtime counsel Baker McKenzie to represent it in a lawsuit against the U.S. Department of Commerce—the second high-profile suit filed in four days against the government over its trading ban of Huawei Technologies Co. Ltd.

On Monday, the company filed its lawsuit in the U.S. District Court for the District of Columbia, challenging the constitutionality of the Commerce Department and its Bureau of Industry and Security’s (BIS) enforcement of the Export Administration Regulations (EAR). The company argued that the regulations create a substantial burden that deprives FedEx of substantive due process under the Fifth Amendment of the U.S. Constitution.