the gov TLD is managed by the US government. It's very rare that you renew anything with ICANN, since you're almost always going at least to the entity that manages a TLD (unless you run a TLD, then I guess there'd be an ICANN fee).
If you have a .com domain, you're renewing with VeriSign, the company that owns the com TLD.
If you have a .com domain, you're renewing with VeriSign, the company that owns the com TLD.