A lawyer who used to be a government officer or employee stays bound by Rule 1.9(c) and may take on a client in a matter the lawyer handled personally and substantially in government only with the agency's informed written consent; the firm may act if that lawyer is promptly walled off, takes no share of the fee, and the agency is told in writing. A lawyer holding confidential government information about a person may not act for a private client against that person where the information could be used to that person's material disadvantage, and the firm may act only behind the same screen. A lawyer now in government service remains bound by Rules 1.7 and 1.9, may not work on a matter handled personally and substantially in private practice without the agency's written consent, and may not negotiate for private employment with a party or lawyer involved in a matter the lawyer is working on, subject to the law clerk exception.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.