More than 4 in 5 Americans say lawmakers shouldn't eliminate the tax deferrals associated with 401(k) plans, IRAs and other products, according to research from the Investment Company Institute. That suggests that 401(k) plans are doing better than many people believe, said Paul Schott Stevens, the group's president. "We're trying to counter all of the doom and gloom about the 401(k) system being a failure. ... The participants don't feel that way," Stevens said.