WASHINGTON (AP) — House Republicans, scrambling to win conservative support for a bill addressing the immigration crisis on the border, have scheduled a companion vote on legislation to block President Barack Obama from extending deportation relief to any more immigrants here illegally.

The late-night maneuvering Wednesday came ahead of a planned vote Thursday on a $659 million bill to send resources to the border and to speed the return back home of unaccompanied Central American minors who’ve been arriving by the tens of thousands. Conservative support was lacking with time running short before lawmakers’ annual August recess begins Friday.