Yup,that's the one.Regarding "without the Consent of Congress" I've wondered how the Port Authority of New York and New Jersey (PANYNJ) came to be.That's the entity that controls bridges,tunnels and trains between NYC and New Jersey.Either it doesn't qualify as a "compact" or it got the consent of Congress.
Not surprisingly, the USSC basically has given the OK to any such agreements unless Congress specifically objects.