That's according to lawmakers briefed by the White House chief of staff on Thursday.
The president approval ratings have dropped to 43 percent across all age groups.
The number of unaccompanied minors entering the United States illegally dropped for the second month in a row.
Sen. Robert Menendez (D-N.J.) says he's "deeply disappointed."
White House says president will delay action until after November elections.
A federal lawsuit could complicate Obama administration's attempt to deal with border crisis.
The number of children crossing the border illegally has dropped by nearly half in July, federal officials say
The measure would provide most, but not all of the funding President Obama is seeking to deal with the influx of migrants from Central America.
GOP leaders are trying to win enough support from skeptical conservatives to pass a bill by Thursday.
Several big issues -- veterans' health care, highway construction funding and how to deal with the U.S.-Mexico border -- remain unresolved with just hours to go until recess.