AMEX wants tax return, nothing else. Tax return cannot be forged, unlike paystub or bank statement (tax return comes from IRS directly).
I think you are worrying too much. I applied 6 cards this year and haven't got hit with FR yet.
In My Wallet:
Citi Forward (12/2010) | Citi TY Preferred (05/2011) | BofA Travel Rewards (07/2011) | Chase Freedom (11/2011)
GECRB/PayPal (05/2012) | Discover it (07/2012) | US Bank Cash Reward (08/2012) | AMEX BCE (09/2012)
Target (10/2012) | Chase Ink Classic (11/2012) | BofA Balance Rewards (04/2013)
