The statement that accurately analyzes how a new law is enacted after it is passed by Congress and signed by the president is:
Federal agencies develop rules in accordance with the Administrative Procedure Act of 1946 to effectively implement the new law.
This statement is correct because once a law is enacted, it is often the responsibility of federal agencies to create detailed regulations that outline how the law will be implemented. This process is governed by the Administrative Procedure Act, which requires agencies to follow specific procedures for rulemaking.