After moving from home, my mother gave me my birth certificate which had been used to enroll me in school, get my drivers license, enroll in college and even get a replacement social security card when I lost mine. About 20 years ago, my brother in law was getting married in Cancun. I didn't have a passport so I used my birth certificate at the airport to fly international. No problems. Until I got to the airport in Cancun. I showed the clerk my bc and she informed me that it was not a valid form of ID and they couldn't let me in. After a bit of language barrier, come to find out, all I had was a souvenir copy from the hospital where I was born, not a state issued bc. But after I slid her a US gov issued picture of Andrew Jackson, all of a sudden my souvenir copy became good enough to get me into Mexico.