Of course you can call yourself an engineer without formal training in the US. https://www.vice.com/en/article/man-fined-dollar500-for-crime-of-writing-i-am-an

Of course you can call yourself an engineer without formal training in the US. https://www.vice.com/en/article/man-fined-dollar500-for-crime-of-writing-i-am-an-engineer-in-an-email-to-the-government/ https://www.vice.com/en/article/man-fined-dollar500-for-crim... https://www.vice.com/en/article/oregon-unconstitutionally-fined-a-man-dollar500-for-saying-i-am-an-engineer-federal-judge-rules/ https://www.vice.com/en/article/oregon-unconstitutionally-fi...