Just as a clarification, NSA doesn't set those standards. Agencies like NIST set AES and SHA3 through open worldwide competitions. These standards then become parts of larger compliance guidelines like FIPS (Federal Information Protection Standard I think) that govern how the USG should protect its data.
NIST has like 2 cryptographers, doesn't it? The real guidance at NIST comes from NSA. If you think NSA is backdooring Suite B crypto, you can't trust NIST.
