There is no internal resistance at all. In fact, the organization, CBSA, recognizes that this is a gap in the architecture and that it needs to be filled.
Part of it was filled by Bill C-22 with the committee of parliamentarians, as far as national security is concerned. Part of it was filled by Bill C-59 and the creation of the new NSIRA, again with respect to national security.
This legislation fills in the last piece.