Wow - Misinformation at its finest. The proposition is called Check 21, I recommend that if you are really interested you Google it and read.
It does NOT require banks to do anything. It merely changes the law to allow banks to use electronic replacements. Plenty of banks will not use it, some will find it a god send.
I have been dealing with this mess for the last few months because I run websites that sell check paper and MICR toner.
My major check manufacturer was having a pain dealing with it, because it does NOT require change, so they were trying to save money by not testing things. I finally got them to give me a list of which ones were compliant and which ones werent, as a majority of the anti fraud technology in the checks are used to defeat scanning and this new way is to scan the check in.
For a short read try the Federal Reserve Board:
http://www.federalreserve.gov/paymen...on/default.htm
a small quote to prove the point:
The law does not require banks to accept checks in electronic form nor does it require banks to use the new authority granted by the act to create substitute checks.