Sentence:  In times of inſurrection or invaſion it would be natural and proper that the militia of a neighbouring ſtate ſhould be marched into another to reſiſt a common enemy or to guard the republic againſt  the violences of faction or ſedition. ... If the power of affording it be placed under the direction of the Union, there will be no danger of a <WSD>ſupine</WSD> and liſtleſs inattention to the dangers of a neighbour, till its near approach had ſuperadded the incitements of ſelf preſervation to the too feeble impulſes of duty and ſympathy. 
Meaning of the word marked with <WSD> tags:  Reluctant to take action due to indifference or moral weakness; apathetic or passive towards something.