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.
In the District Court for Massachusetts the appellant’s petition for a writ of habeas corpus was denied for want of jurisdiction. The immigration authorities found that at the time of her entry into the United States the appellant was mentally deficient; that her mental impairment was such as then to render her liable to become a public charge; and ordered her deported. There was substantial evidence to warrant these findings. They are therefore final..
Appeal dismissed.

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: 0