Benjamin N. Cardozo,
Martin v. National Surety Company…
“ A transfer of a warrant has need to be accompanied by safeguards lest the assignor may avoid it afterwards for forgery or fraud. A transfer of the fund after payment is perfected is of no concern to any one except the parties to the transaction, and this quite irrespective of the time of the assignment or the manner of its making.If the Government has any interest in the outcome of this controversy it is in sustaining the assignment to the surety rather than destroying it. The contractor undertook that materialmen would receive their money promptly while the work was going on. ”
