SEC investigations are not known for their haste, so the agency's review of San Diego 's finances could take a while. The time involved is not unusual, said Peter Henning, a former attorney in the SEC\'s enforcement division. \"Two to three years is quite common,\" said Henning, a law professor at Wayne State University in Detroit . \"And of course, this is sensitive, too, because you\'re talking about government officials, so there has to be concern about the effect on municipal government.\"