Final answer:
The headline's accuracy depends on the survey methodology and whether the sample was truly random. Historical trends show federal taxes as a percentage of GDP have remained relatively stable. The U.S. has a progressive tax system, with high-income households paying a larger percentage of their income in taxes.
Step-by-step explanation:
The accuracy of the headline "more than half of Americans say federal taxes too high" depends on the methodology of the survey or poll that collected the data. If the survey was designed properly and the sample was truly random, then the conclusion could be considered accurate at the stated level of significance. It's important to note that public perception regarding taxation and federal taxes does not always align with the factual tax burden. Historical data shows that total federal taxes as a share of GDP have fluctuated between 17% to 20% except during a recession, notably 2009-2011. The United States employs a progressive tax system, which means higher-income households typically pay a higher average share of their income in federal income taxes than lower-income households, which may be reflected in public sentiment about the tax burden.