Hawthorne v. Calef was a United States Supreme Court case that dealt with the issue of whether or not an individual had the right to sue another for damages caused by slanderous words spoken in public. The plaintiff, Hawthorne, argued that he had been slandered and defamed by the defendant's words and sought compensation for his losses as a result of this defamation. The court ultimately ruled in favor of Hawthorne, finding that individuals have a legal right to seek redress from those who make false statements about them which cause harm. This decision established an important precedent regarding freedom of speech and libel laws in America; it affirmed citizens' rights to protect their reputations through civil action when necessary while also protecting free expression under certain circumstances.

In Hawthorne v. Calef, the Supreme Court was asked to decide whether a state court had jurisdiction over a case involving federal land patents. The majority opinion held that it did not have such jurisdiction and reversed the decision of the lower court. Justice Field dissented from this ruling, arguing that Congress had never intended for state courts to be excluded from hearing cases involving federal land patents. He further argued that if Congress wanted to exclude state courts from having any authority in these matters, they would have done so explicitly in their legislation rather than leaving it up to judicial interpretation. Furthermore, he noted that allowing states some degree of control over these matters could help ensure uniformity across all states when dealing with similar issues related to federal lands and property rights within each respective state's borders.