They would want more concrete concessions to persuade them that it is worth their while.

他们希望总统做出更多让步。

Ay, it might have been worth their while, the good folks down there, to have kept in with me; things might have been different then.

是的，下面的好人， 和我在一起可能是值得的； 那时情况可能有所不同。