Task: songer_usc1

What follows is an opinion from a United States Court of Appeals.
Your task is to identify the most frequently cited title of the U.S. Code in the headnotes to this case. Answer "0" if no U.S. Code titles are cited. If one or more provisions are cited, code the number of the most frequently cited title.

PER CURIAM.
We agree thoroughly with Judge Mur-dock’s findings of fact and opinion that the losses in these ill-fated ventures cannot be considered “ordinary and necessary expenses paid * * * in carrying on any trade or business” under I.R.C. 1939, § 23(a) (1) (A). Nor do we find basis for sustaining the taxpayers’ belated claim that the losses were “ordinary and necessary expenses * * * for the production or collection of income” under I.R.C.1939, § 23(a) (2).
Decision affirmed.

Question: What is the most frequently cited title of the U.S. Code in the headnotes to this case? Answer with a number.
Answer:

Answer: 26