What part of the Constitution talks about Freedom of Passage and what does it mean exactly?

Answer 1

I assume you're talking about Australia?


http://www.h-net.org/~habsweb/sourcetexts/auscon.htm

Answer 2

There is no "freedom of passage" listed in the constitution.

The closest equivalent is the implied fundamental right to travel within the US, as recognized under Article IV Privileges and Immunities clause.