When conflict between factions in the Mexican Civil War led to the possibility of U.S. military action to defend the U.S.-Mexico border , Grigsby offered to raise a volunteer force and lead it to Texas , but the federal government relied on mobilized National Guard units rather than volunteers to perform this mission . In 1916 , Grigsby was again a supporter of Roosevelt for president , and ran unsuccessfully for delegate to the Republican National Convention
Republican National Convention
1916 Republican National Convention
Melvin Grigsby