Here's the 35%:
http://www.taxfoundation.org/taxdata/show/151.html
You can also find it here, page 8:
http://www.irs.gov/pub/irs-pdf/f1040es.pdf
Can we agree that FICA is 6.2% and Medicare is 1.45%
35 + 6.2 + 1.45 = 42.65%.
This is on income earned over $373500. Income below that amount is taxed at a lower rate.