Trump administration officials told lawmakers on Wednesday that the US is not currently planning to launch strikes inside Venezuela and doesn’t have a legal justification that would support attacks against any land targets right now,

U.S. senators are due to vote on a resolution on Thursday that could keep President Donald Trump from attacking Venezuela without congressional authorization, a day after administration officials told lawmakers that Washington did not yet have a legal justification for strikes on Venezuelan territory.

All but two G.O.P. senators voted against a resolution to stop the president from expanding his military campaign against drug traffickers to include land targets inside Venezuela.

Schumer warned that the deployment of the USS Gerald R. Ford aircraft carrier to the Caribbean — part of what he called “the largest military buildup in our hemisphere in decades” — raised urgent con...