associations became firmly ingrained, persisting in subsequent years. Although the assignment of colors to political parties is unofficial and informal, the media has come to represent the respective political parties using these colors. The party and its candidates have also come to embrace the color red. Political positions Economic policies Republicans believe that free markets and individual achievement are the primary factors behind economic prosperity. Republicans frequently advocate in favor of fiscal conservatism during Democratic administrations; however, they have shown themselves willing to increase federal debt when they are in charge of the government (the implementation of the Bush tax cuts, Medicare Part D and the Tax Cuts and Jobs Act of 2017 are examples of this willingness). Despite pledges to roll back government spending, Republican administrations have, since the late 1960s, sustained or increased previous levels of government spending. Taxes The modern Republican Party's economic policy positions, as measured by votes in Congress, tend to align with business interests and the affluent. Modern Republicans advocate the theory of supply-side economics, which holds that lower tax rates increase economic growth. Many Republicans oppose higher tax rates for higher earners, which they believe are unfairly targeted at those who create jobs and wealth. They believe private spending is more efficient than government spending. Republican lawmakers have also sought to limit funding for tax enforcement and tax collection. At the national level and state level, Republicans tend to pursue policies of tax cuts and deregulation. Welfare Republicans believe individuals should take responsibility for their own circumstances. They also believe the private sector is more effective in helping the poor through charity than the government is through welfare programs and that social assistance programs often cause government dependency. As of November 2022, all eleven States that have not expanded Medicaid have Republican-controlled state legislatures. Labor unions Republicans believe corporations should be able to establish their own employment practices, including benefits and wages, with the free market deciding the price of work. Since the 1920s, Republicans have generally been opposed by labor union organizations and members. At the national level, Republicans supported the Taft–Hartley Act of 1947, which gives workers the right not to participate in unions. Modern Republicans at the state level generally support various right-to-work laws, which prohibit union security agreements requiring all workers in a unionized workplace to pay dues or a fair-share fee, regardless of whether they are members of