<prompt> Translate the following text to EnglishKatika kifungu cha 16 cha Sheria ya Sheria ya Marekani, Uhusika katika aina tatu za shughuli zinazohusiana na ushawishi wa ustawi, utengenezaji wa sheria, na madai ya kisheria unakatazwa.  <response>: Subsection a16 prohibits involvement in three types of activities with respect to welfare lobbying, rulemaking, and litigation. 