Fidelity National Information Services Inc., which is seeking federal approval to spin off a unit that processes data for major mortgage providers, warned that its business could be harmed by heightened government inquiry into the U.S. lending crisis and new regulations that may result.In a filing with the Securities and Exchange Commission, Fidelity National said that lawsuits or tighter regulations that may ensue from state and federal probes of mortgage-lending practices in response to the housing-market collapse "could have adverse consequences that could affect our business."