The chairman of the House Financial Services Committee's letter follows chairman Powell’s testimony.
ISDA said the proposals will increase market risk capital between 73% and 101%.
FIA estimates top six US clearing banks would need $7.2bn more for derivatives clearing.
Daniel Pinto, Colm Kelleher and David Solomon warn on the proposed implementation of Basel III in the US.
Basel III's capital charge is doing more harm than good to bank-owned FCMs
New regs will prompt banks to shed riskier assets and decrease risk-taking.
Regulations have shrunk the European repo market