travlers checks and money exchange

Are American Express travlers checks accepted at banks with passport easily? Best places to change us dollares for pesos? Do the cambios cash American Express travlers checks easily with passports?

Thanks for good information about passport on America. Because next week i am going America. Thanks for helps.

Passports for Children and Passport Renewal

I read somewhere that businesses are starting to refuse US currency. Is this true or not. Do we need to exchange money at the airport to pay for the cab? Getting excited and want to be prepared.