An omission in a clause leaded by 'however' or 'whatever'

I have posted the same question on another forum quite a while ago, I'd like to ask your understanding about this, and a certain helper said then that #2 and #3 were wrong sentence with omission because of ambiguity.

In the following sentences, a subject and a verb or a verb in each concessive clause is omitted, and I have filled in the space which the words is omitted at with expected words.

1) However important and noble and objective (it is), it cannot be achieved at the expense of the rule of law.
2) At nighttime, married guests must always be invited with their spouses. But for meals and quasi-social gatherings during the daytime, an individual may be invited alone, no matter how solidly mated (they are).
3) Whatever the exact source of his appeal (is), Koch, like Ronald Reagan, has managed to persuade the citizens that happy days are here again in the face of continent of evidence to the contrary.

Are all of my suppositions right?

Thank you in advance for your help.