[Citigroup Warns That Trump's Proposal to Cap Credit Card Interest Rates Could Lead to Economic Slowdown] Citigroup Chief Financial Officer Mark Mason stated that the bank is willing to align with Trump's agenda to improve affordability but does not support his proposal to cap credit card fees. During a conference call with reporters on Wednesday following Citigroup's fourth-quarter earnings release, Mason said, 'Interest rate caps are very likely to lead to a significant economic slowdown.' He added that affordability is an important issue Citigroup hopes to work with the government to address, but 'frankly, we cannot and will not support the proposal for interest rate caps.' Last Friday, Trump announced that banks must set a 10% cap on credit card interest rates, with a deadline of January 20. This week, he also called on Congress to support legislation aimed at limiting fees. (Cailian Press)