Be that as it may, Deanna is hardly hailing from a small, uninfluential region of space herself. The Federation is hard to intimidate, especially in regards to something like this.

"The legislature would ultimately have to make that decision."

Which would involve a lot of arguing, and ambassadors and scientists investigating the situation... and of course, the truth is, though she claims powerlessness, Deanna's word would influence a great deal, if she were to return to the Federation with knowledge of the Cetagandans. And that's all assuming the immediate reaction wouldn't be to shut down whatever the hell this is that created a rift between parallel universes in the first place. Nothing good ever comes of that.