"it's worth questioning" is a correct and usable phrase in written English.
You can use it when you want to express the idea that something is important to think about or investigate further. For example: "We need to consider the long-term implications of this decision—it's worth questioning how it will affect us in years to come."
Whether or not Rakoff's earlier opinion was correct, it's worth questioning the Second Circuit's reasoning, which could make it more difficult for judges to challenge S.E.C. decisions in the future.
Furthermore, it's worth questioning whether bitcoin's most loyal users will give up one of the currency's principal advantages — anonymity.
After Thursday's Senate Armed Services Committee hearing on the nomination of Chuck Hagel for Secretary of Defense, though, it's worth questioning whether this is still a good idea.
"I'm not sitting here criticizing anyone, but it's worth questioning whether he is.
It's worth questioning the leap from "technology affects us" to "technology will ruin us".
It's worth questioning why, over the years, the face of yoga has transformed into something that's thin, white and blonde, paired with clean eating, and part of an aspirational lifestyle.
It is worth questioning Trump's next claim that he is building a bigger and stronger Republican Party.
It is worth questioning how many of the tests now conducted are necessary.At present, all batches of vaccine are subject to the same battery of tests.
It is worth questioning whether these students might have succeeded in vocationally directed classes like wood shop, and thus would have discovered and pursued non-academic skills.
But given that exotic instruments played a central role in the credit crisis, it is worth questioning the costs and benefits of such financial innovations.
As taxpayers, it is worth questioning why governments think they can fix complex and wicked problems with simplistic "big stick", hardline approaches.
