How have courts interpreted the meaning of Section 1964(c) of the RICO Act?

United States v. Mitchell, 445 U.S. 535, 538, 100 S.Ct. 1349, 1351, 63 L.Ed.2d 607 (1980). Thus, our analysis must be informed by the following question: Do the relevant sources of congressional intent on the meaning of Section 1964(c), separately or collectively, evince an unequivocal expression of congressional intent to expose the government to RICO liability? That the United States is capable of owning property and is, perhaps, an "entity" is no better than ambiguous evidence on this issue since