by the time the convention ended, banks's red river campaign had come to its ignominious end and banks was superseded in military (but not political) matters by major general edward canby. president lincoln ordered banks to oversee elections held under the new constitution in september, and then ordered him to return to washington to lobby congress for acceptance of louisiana's constitution and elected congressmen. radical republicans in congress railed against his political efforts in louisiana, and refused to seat louisiana's two congressmen in early 1865. after six months, banks returned to louisiana to resume his military command under canby. however, he was politically trapped between the civilian government and canby, and resigned from the army in may 1865 after one month in new orleans. he returned to massachusetts in september 1865. secretary of war halleck in early 1865 ordered william farrar smith and james t. brady to investigate breaches of army regulations during the occupation of new orleans. the commissioners' report, which was not published, found that the military administration was riddled by "oppression, peculation, and graft".