WASHINGTON (AP) — Retreating with a purpose, Republicans sped legislation through the House on Wednesday to avert the imminent threat of a government default but pointing the way to a springtime budget struggle with President Barack Obama over Medicare, farm subsidies and other benefit programs. The current legislation, which cleared the House on a bipartisan vote of 285-144, would permit Treasury borrowing to exceed the limit of $16.4 trillion through May 18. As it passed, Speaker John Boehner pledged that Republicans would quickly draft a budget that would wipe out deficits in a decade, and he challenged Democrats to do the same.