Canadian pr and South Korean passport holder traveling us

[cstlex]

As title says
I'm Canadian resident and South Korean citizen.
I have ESTA right now.
The thing is
My passport only has 2 months left until expire.
and I have to go short trip to us at end of Mar.
which means i don't have 6 months validity thing right now.

is this cause any problem to me?
like the homeland security guys at airport rejects me or something?