There are fees the merchant must pay when you use your debit card also.
The legislation is stating it is quite ok to charge the fee, just make all fees associated with transactions transparent so that the market is competitive.
I have no problem with this at all.
That's because you read (and understood) the article. What's wrong with you anyway? ;-)
Judging from the pdf link provided, this bill will end whatever competition now exists. Fees will be set by the courts or their threatened action. The bill is totally anti-competitive.