Under terms set by the card systems the merchant can refuse to accept any or all varieties of plastic, but if it takes a card it can't make the user pay the card fee.

FORBES

Many consultants, investment and actuarial, either refuse to accept fiduciary status or seek to limit their liability.

FORBES: Emerging New Fiduciary Trends and Developments: Systems of Mass Deception vs. Systems of Enhanced Diligence (September 1, 2003)

Or do they refuse to accept responsibility and risk losing credibility?

WSJ: A Protest Vote Is Still Only a Protest Vote

To my knowledge, Fidelity never disclosed to 401(k) plan sponsors or participants that it had decided from 2004 to 2008, in order to bolster its own bottom line, to refuse to accept the fee discounts, rebates or revenue-sharing fund managers had agreed to pay and had been paying.

FORBES: Fidelity 401(k) Price-Fixing Scheme Cost Retirement Savers Plenty

Not surprisingly, The New York Times and the rest of the mainstream media refuse to accept what in the real world amounts to definitive new evidence of Iranian intentions, or the consensus outside the left that the NIE was at best misleading.

CENTERFORSECURITYPOLICY: About that NIE...