To become law, the bill will need to be included in a final version of tax legislation from the U.S. House Committee on Ways and Means, pass both the House and the Senate, and finally be signed by the President. In 2005, President Bush established an advisory panel on tax reform that examined several national sales tax variants including aspects of the FairTax and noted several concerns. These included uncertainties as to the revenue that would be generated, and difficulties of enforcement and administration, which made this type of tax undesirable to recommend in their final report. The panel did not examine the FairTax as proposed in the legislation. The FairTax received visibility in the 2008 presidential election on the issue of taxes and the IRS, with several candidates supporting the bill. A poll in 2009 by Rasmussen Reports found that 43% of Americans would support a national sales tax replacement, with 38% opposed to the idea; the sales tax was viewed as fairer by 52% of Republicans, 44% of Democrats, and 49% of unaffiliateds. President Barack Obama did not support the bill, arguing for more progressive changes to the income and payroll tax systems. President Donald Trump has proposed to lower overall income taxation and reduce the number of tax brackets from seven to three.