[Petronski]

To expect G-d's blessings to continue to rain down like quarters from heaven is a bit shortsighted on our part. G-d is under no obligation to bless America.

It's a REQUEST for blessings. The perceived 'obligation' he mentions is a strawman.

[cmak9]

"It's a REQUEST for blessings. The perceived 'obligation' he mentions is a strawman."

Exactly. The "May" is implied.