sentences:  See also "Smith v. Arkansas State Highway Employees", where the U.S. Supreme Court ruled that the Arkansas State Highway Commission's refusal to consider employee grievances when filed by the union, rather than directly by an employee of the State Highway Department, did not violate the First Amendment to the United States Constitution.The Supreme Court has largely interpreted the Petition Clause as coextensive with the Free Speech Clause of the First Amendment, but in its 2010 decision in "Borough of Duryea v. Guarnieri" (2010) it acknowledged that there may be differences between the two