I think those kind of prayers are preceeded by confession and repentance of sins.
Not sure how our government’s support of abortion and the gay/lesbian agenda fits into that formula.
...but as you said, confession and repentance can bring mercy..(it did for Nineveh)
He does hear the prayers of the saints...
..and did He not send us a Ted Cruz to give us hope!
Don't stop praying.
But you NEED to pray in order to repent!