On NBC News' [Full Romney Interview: 'The President Needs To Stop And Reset'](https://youtu.be/7TYCVsiS7b4?t=97) at about `01:57:` US Senator [Mitt Romney](https://en.wikipedia.org/wiki/Mitt_Romney) says that he'd shut down the [Nord Stream 2 pipeline](https://en.wikipedia.org/wiki/Nord_Stream#Nord_Stream_2) now:

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> Q: ...So, what is it that the US could do (non-militarily) that could really convince Putin he should back down?
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> Romney: Well the clearest thing we could do is to make sure he doesn't have the Nord Stream 2 pipeline. As you know that's a gas pipeline that provides extraordinary to Putin and to Russia. It bypasses Ukraine, and the big mistake we made is to allow him to build that - to bypass Ukraine (as we should have)
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> We should let him know that Nord Stream 2 pipeline is not going to operate. If he does any action to overthrow the government in Ukraine, that's getting shut down. **I'd shut it down now as a matter of fact, a huge error not to have done so already.**
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While there's nothing about Nord Stream 2 in Wikipedia's [Political positions of Mitt Romney](https://en.wikipedia.org/wiki/Political_positions_of_Mitt_Romney), Romney's positions are generally either steady or slow to evolve, so it's not likely that he's used this NBC interview to announce a new position.

**Question:** With what justification and by what means would Mitt Romney "shut it down now" (Nord Stream II pipeline)? What is his ***articulated position*** on both how this *should* and *could* be done.