But the plan, at its heart, is libertarian. While promising to cut $1 trillion in spending during his first year, Mr. Paul would eliminate the Departments of Education, Commerce, Energy, Interior and Housing and Urban Development. When former Massachusetts Gov. MItt Romney unveiled his economic plan last month, he said he would submit legislation to reduce nonsecurity, discretionary spending by $20 billion.

Mr. Paul would also push for the repeal of the new health-care law, last year’s Wall Street regulations law and the Sarbanes-Oxley Act, the 2002 corporate governance law passed in response to a number of corporate scandals, including Enron.

Other proposal are more vague, and the campaign has not yet released estimates of economic growth under the plan.