White House Budget $1.5B for Farmers: What Budget? Does WH Have Spending Power?

Rahm Emanuel, Obama's Chief of Staff, has told Senator Blanche Lincoln (D-AR) the White House will find $1.5 BILLION for farmers suffering from disasters across the country, including for her state of Arkansas, from the budget. What budget? We don't have a budget. He means from Obama's stash, which comes from only the Almighty knows where.

White House

Lincoln successfully got the $1.5 billion of agricultural disaster assistance in a bill designed to aid small businesses. Republican blocked the vote. But apparently Rahm will find it, and provide it through "administrative assistance" from Obama's stash? 

Emanuel called Lincoln on Thursday morning to tell her the administration would find $1.5 billion within its budget to help farmers in Arkansas and around the country who are coping with natural disasters.

Emanuel promised to provide the assistance administratively to get her to agree to delete $1.5 billion in disaster relief assistance for farmers from small-business legislation. 

Emanuel’s intervention shows how closely the president and his senior aides are following the bill Democrats are trying to push through Congress. 

Since when does the Executive Branch have the right to spend? Again, from what Budget will Rahm find the $1.5 billion? Only Congress has the power to spend. The point is, if Congress does not agree to spend taxpayer dollars, the President cannot just take care of it himself.

Note: this has nothing to do with farmers getting money that may be due them. It has everything to do with how they get it. From what authority does White House have that power?