WASHINGTON

TODAY’S Republicans are very good at tending the fire of Ronald Reagan’s memory but not nearly as good at learning from his successes. They slavishly adhere to the economic program that Reagan developed to meet the challenges of the late 1970s and early 1980s, ignoring the fact that he largely overcame those challenges, and now we have new ones. It’s because Republicans have not moved on from that time that Senators Marco Rubio and Rand Paul, in their responses to the State of the Union address last week, offered so few new ideas.

When Reagan cut rates for everyone, the top tax rate was 70 percent and the income tax was the biggest tax most people paid. Now neither of those things is true: For most of the last decade the top rate has been 35 percent, and the payroll tax is larger than the income tax for most people. Yet Republicans have treated the income tax as the same impediment to economic growth and middle-class millstone that it was in Reagan’s day. House Republicans have repeatedly voted to bring the top rate down still further, to 25 percent.

A Republican Party attentive to today’s problems rather than yesterday’s would work to lighten the burden of the payroll tax, not just the income tax. An expanded child tax credit that offset the burden of both taxes would be the kind of broad-based middle-class tax relief that Reagan delivered. Republicans should make room for this idea in their budgets, even if it means giving up on the idea of a 25 percent top tax rate.

When Reagan took office, he could have confidence in John F. Kennedy’s conviction that a rising tide would lift all boats. In more recent years, though, economic growth hasn’t always raised wages for most people. The rising cost of health insurance has eaten up raises. Controlling the cost of health care has to be a bigger part of the Republican agenda now that it’s a bigger portion of the economy. An important first step would be to change the existing tax break for health insurance so that people would be able to pocket the savings if they chose cheaper plans.