Subsection (a)(16) prohibits involvement in three types of activities with respect to welfare  lobbying, rulemaking, and litigation.
Subsection (a)(16) does not list any activities to be prohibited.
mnli hypothesis: Subsection (a)(16) does not list any activities to be prohibited. premise: Subsection (a)(16) prohibits involvement in three types of activities with respect to welfare  lobbying, rulemaking, and litigation.