WASHINGTON (AP) — House Republicans are moving toward authorizing a potential lawsuit against President Barack Obama on immigration, House Speaker John Boehner announced Tuesday, as the GOP struggled for a way to stop the president’s unilateral deportation curbs.Boehner announced the plans in a closed-door meeting with lawmakers, telling them GOP leaders are finalizing a legal plan with the best chance of blocking Obama’s moves, according to a person in the room.Options include joining a lawsuit already filed by states over the issue, or filing a separate lawsuit. The person in the room spoke on the condition of anonymity to discuss the private meeting.The plan emerged with Republicans short on realistic options for stopping Obama’s November executive actions, which extended work permits and temporary deportation relief to some 4 million people here illegally.The House already has passed legislation to overturn the immigration policies, but the Senate looks unlikely to agree to the measures, which were added to must-pass legislation to fund the Department of Homeland Security beyond February.It’s not clear how that issue will be resolved. Senate Majority Leader Mitch McConnell has promised a vote on the House-passed bill, and said Tuesday that the Senate would take up the issue after completing consideration of the Keystone XL oil pipeline, which could be as soon as next week.But nearly all Senate Democrats signed a letter to McConnell Tuesday urging him not to include immigration measures on the Homeland Security spending bill.