That's the question presented in Ciminelli v. United States, which SCOTUS will hear tomorrow morning. The government's use fraud statutes is out of control; it has criminalized basic breach of contract cases.  As an example, in a recent case in this district, a group of defendants were sentenced to 18 years (!!) under a right to control theory where the alleged fraud was based on a lie on how the defendants would use the product they purchased.  So Ciminelli is a big one, not just for the Second Circuit.
From SCOTUSblog:
This case has similarities with prior corruption disputes selected by
 the Supreme Court. It involves millions in New York state funds and 
thus raises federalism concerns: How much flexibility should states have
 in governance decisions without federal interference? The bidding 
process may have been unfair to Ciminelli’s competitors, but did the 
unfairness merit federal intervention? The harm calculation in this case
 is also unclear: Did Ciminelli intend to cause any loss to Fort 
Schuyler? There may have been a stronger case that Ciminelli wanted to 
cause business losses to his competitors by denying them a chance at the
 Buffalo Billion. Finally, because this is a criminal case, there is the
 specter of overcriminalization. Was Ciminelli on notice that he was 
committing a federal crime as opposed to utilizing sharp business 
practices to edge out competitors?
Deception in the government contracting process is a legitimate 
threat, and courts face a challenge in determining which forms of 
deception are serious enough to merit criminal sanctions. Some level of 
insincerity is expected — when a contractor makes its “best” offer, 
there is likely some puffery or gamesmanship involved in the 
negotiations. On the other hand, collusive price-fixing behavior among 
the contractors bidding for business is both improper and illegal. When 
are financial penalties sufficient to deter sketchy contractors, and 
when does federal prison become important in limiting bad behavior?
In Ciminelli’s case, the main wrongdoing appears to be his “sneaking 
to the front of the line” in the negotiation process. If the Supreme 
Court continues its trend of narrowing the scope of federal fraud 
criminalization, it can do so by eliminating the “right to control” 
theory of fraud. A decision that narrows or nixes that theory could 
reduce uncertainty among government contractors. Potential contractors 
would face a reduced risk of prison time when engaging in 
pre-negotiation talks with government insiders. Less clear is how much 
such a narrowing decision would benefit Ciminelli. Because the jury 
instructions and facts give room for having proven tangible economic 
harm, it is uncertain how much influence the “right to control” language
 had upon the jury’s decision to convict.
Hope everyone had a great Thanksgiving.