WASHINGTON (AP) — A key Republican said Friday that President Barack Obama’s multibillion-dollar emergency request for the border is too big to get through the House, as a growing number of Democrats rejected policy changes Republicans are demanding as their price for approving any money.

The developments indicated that Obama faces an uphill climb as he pushes Congress to approve $3.7 billion to deal with tens of thousands of unaccompanied kids who’ve been arriving at the U.S.-Mexico border from poor and increasingly violent Central American nations. And they suggested that even as the children keep coming, any final resolution is likely weeks away on Capitol Hill.