House Democrats are preparing to pass an Afghanistan war-spending bill on a party-line vote as Republicans balk at extra provisions the White House wants in the measure. Passing such a spending bill through the lower chamber will be difficult because some anti-war Democrats routinely vote no on war bills. Moreover, Speaker Nancy Pelosi (D-Calif.) has vowed not to lean on her caucus on this year’s war supplemental after whipping the measure in 2009. House Democratic leaders are planning to take up the package funding President Barack Obama’s troop increase in Afghanistan after it passes the Senate. Senior Democrats in the...