  This document has been prepared as a Snowmass contributed paper by the Public
Policy \& Government Engagement topical group (CEF06) within the Community
Engagement Frontier. The charge of CEF06 is to review all aspects of how the
High Energy Physics (HEP) community engages with government at all levels and
how public policy impacts members of the community and the community at large,
and to assess and raise awareness within the community of direct
community-driven engagement of the U.S. federal government (\textit{i.e.}
advocacy). The focus of this paper is the advocacy undertaken by the HEP
community that pertains directly to the funding of the field by the U.S.
federal government.
