If the tool is available, it will be subject to debate in Parliament, and the first thing you'll hear is, “We have this legislation, so why aren't we using it?” That will raise the political pressure to act in a certain way. That is the concern. It increases the currency of the hostages. Once a hostage-taker knows that the victim is now the subject of sustained domestic political pressure, the hostage becomes more valuable and the resolution will become more expensive.
When it comes to choosing sanctions as a response, that choice is already available under the Special Economic Measures Act. If you put a specific name to this particular tool, it risks making the pressure to use that tool greater, which in turn increases the political value of the hostage. That would be my concern.