Grassley, McConnell, adamant Republicans won't help Dems raise debt limit: 'Why are they coming to us?'

Senate Republicans appear united that Democrats will "have to" raise the debt ceiling on their own as long as they're still trying to pass trillions more in spending along party lines.

Forty-six Senate Republicans signed a letter last month vowing that they won't provide votes to help raise the debt ceiling in protest of Democrats' massive spending plans, most notably their reconciliation bill. 

They say Democrats must raise the debt limit either in the reconciliation bill itself or through a separate reconciliation vehicle, because the GOP won't help them as long as the majority is still trying to pass trillions more in spending along party lines.