A classic from yesterday's Evening Standard:
As historian David Kynaston put it, “social mobility has become one of those motherhood-and-apple-pie causes to which it is almost rude not to sign up”.
Let's gloss over the ghastly Americanism-and-apple-pie and rejoice in the fact that he was trying to be clever and remembered to put the "to" before the "which" but then messed it up right royally at the end. Having dodged the first trap, why not go with "pay lip service" or "pledge support"?