American Express U.S. Small Business Card Member Loans 30 Days Past Due Loans As A% Of Total 1.1% At May End; USCS Card Member Loans 30 Days Past Due Loans As A % Of Total 1.4% At May End; USCS Card Member Loans Net Write-off Rate-Principal Only 2% At May End; U.S. Small Business Card Member Loans Net Write-Off Rate - Principal Only 2.6% At May End