Almost all countries worldwide use the same IEC standards that you'd use in Austria for EMC. They may or may not be mandatory in certain countries but the net is widening.
In the US the FCC largely governs this role.
U.S. Requirements
The general EMC requirements in the U.S. are set by the Federal Communications Commission (FCC), while the Food and Drug Administration (FDA) regulates medical products. Mandatory FCC requirements primarily concern computing devices, defined as any electronic device or system that generates and uses timing pulses at a rate in excess of 9000 cycles per second and uses digital techniques. FCC Part 15 covers radio frequency devices capable of emitting RF energy in the range of 9 kHz?200 GHz. Testing should be done according to ANSI C63.4-1992.
Part 18 covers industrial, scientific, and medical (ISM) equipment (Figure 1), defined as any device that uses radio waves for industrial, scientific, or medical purposes and is not intended for radio communications. While most FCC regulations only concern emissions, FDA also requires immunity for certain life-support equipment. FCC Parts 15 and 18 include regulations as well as technical aspects and limits. FCC Part 68, which governs the technical requirements for registration of telecom terminal equipment, includes lightning surge tests (surge immunity).
Google is your friend.
FCC is easy to meet if you're already IEC / CE compliant.
Graham