Both sides hunt support in background check fight

WASHINGTON (AP) — Republican opposition is growing to a bipartisan Senate plan for expanding background checks for firearms buyers, enough to put the proposal’s fate in jeopardy. But the measure may change as both sides compete for support in one of the pivotal fights in the battle over curbing guns.

The Senate continued debating a wide-ranging gun control bill Tuesday, with the focus on a background check compromise struck last week between Sens. Patrick Toomey, R-Pa., and Joe Manchin, D-W.Va. Manchin said the vote on that amendment was likely to be delayed to late in the week, a move...