In the USA, each State has its own statutory requirements for regulating engineering practice that are the responsibility of State Licensing Boards. The requirements may restrict or prohibit the use of professional engineering titles awarded outside the state in question.
If you are intending to carry out engineering work in the USA, you are strongly advised to check whether you require licensure in order to carry out the activity legally. You should check with the State Licensing Board in every state where you intend to practise.
The Engineering Council is working with the National Council for Engineers and Engineering Surveyors (NCEES), to promote recognition and the development of comity provisions whereby professional licenses or qualifications awarded in other states or countries are recognised.