We are proposing to consolidate the regulations governing bovine tuberculosis, currently found in 9 CFR part 77, and those governing brucellosis, currently found in 9 CFR part 78. As part of this consolidation, we are proposing to transition the tuberculosis and brucellosis programs away from a State classification system based in disease prevalence. Instead, States and Tribes would implement an animal health plan that identifies sources of the diseases within the State or Tribal lands and specifies mitigations to address the risk posed by these sources. The consolidated regulations would also set forth standards for surveillance, epidemiological investigations, and affected herd management that must be incorporated into each animal health plan, with certain limited exceptions; would provide revised conditions for the interstate movement of cattle, bison, and captive cervids; and would provide revised conditions for APHIS approval of tests, testing laboratories, and testers for bovine tuberculosis or brucellosis. Finally, we are proposing to revise the bovine tuberculosis- and brucellosis-related import requirements for cattle and bison to make these requirements clearer and assure that they more effectively mitigate the risk of introduction of these diseases into the United States.