Both Democrats and Republicans on the [Senate Energy and Natural Resources Committee] panel expressed concern that fuel prices are choking U.S. consumers. [. . .] Sen. Lisa Murkowski, R-Alaska, said $100 a barrel oil is "not so far out of the realm of possibility," and asked "is that something this country can sustain?" [. . .] Sen. Gordon Smith, R-Ore., said he anticipates "we're going to find many instances of manipulation and fraud." Sen. Pete Domenici, R-N.M., the chairman of the committee, said the panel is prepared to call on oil-company executives to explain rising fuel costs if there is...