<...“deep creep,” ...>
Probably a geophysical cross reference to the politicians.
Well, there certainly are a lot of "Deep State" creeps out there.
"In the United States the term “deep state” is used in Republican and conservative political messaging to describe a conspiracy theory of influential decision-making bodies believed to be within government who are relatively permanent and whose policies and long-term plans are unaffected by changing administrations.
The term is often used in a critical sense vis-à-vis the general electorate to refer to the lack of influence popular democracy has on these institutions and the decisions they make as a shadow government.[1][2]"
https://en.wikipedia.org/wiki/Deep_state_in_the_United_States
deep creep = more illegals tunneling through