They wouldn't have to call a document expert to testify about the online image. They would have to produce an original certified hard copy. There is the "best evidence" rule. If the hard copy of the image exists - which is what they claim - then it would have to be produced.
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This is what I find interesting about Obama: Obama was quick to release a copy of his Hawaii long form birth certificate so he could try to put a quick stop to the growing outcry, led by Trump, for Obama to release his Hawaii long form birth certificate.
1. If I understand what happened correctly, the President of the United States, Obama, had to make a special request to Hawaii officials in order for those officials to release his long form birth certificate.
2. I think that Obama used the term "silliness" to describe the growing public demand that he release his long form Hawaii birth certificate, so he went ahead and released his long form birth certificate to put a stop to all this "silliness."
3. Occidental College records: On the other hand, when Obama is asked over and over by the public to release his Occidental College in California records---records that would be easier for Obama to obtain than his Hawaii long form birth certificate because a simple phone call to Occidental officials would probably have his college records released almost immediately---Obama has been conspicuously silent.
4. That is, when it comes to the public outcry that Obama release his Occidental records, President Obama does not describe the outcry as just a bunch of "silliness" as he did when he described the public's outcry that he release his Hawaii long form birth certificate.
5. In fact, it looks like President Obama will never voluntarily release his Occidental College in California records in our lifetime, no matter how much pressure we the public put on the President of the United States.
6. Why is that? What is the President of the United States trying to hide that is in his Occidental College in California records?
7. Social Security controversy: And there is the controversy surrounding Obama's Social Security number: Why is the number assigned to President Obama a number that would normally be assigned to a person who filed for the number in Connecticut, when there is no record that teenager Obama ever lived in Connecticut?
8. Again, it would easier for Obama to get a copy of his original Social Security application and quickly release it to the public than it would be to get a copy of his Hawaii long form birth certificate, but yet Obama has been conspicuously silent when it comes to discussing his Connecticut issued Social Security number. Why is that?
9. That is, we don't see Obama going on national tv and describing this Social Security controversy as just a bunch of "silliness" as he described the controversy surrounding his Hawaii long form birth certificate. Why is that?
10. I make the statement above about how easy it would be for President Obama to obtain a copy of his Social Security application form for this reason: Anybody can easily get a copy of his Social Security application form by simply requesting a copy from Social Security and paying a small fee.
11. You can check out Social Security's website for details.
12. For instance, one can see a copy of deceased President Eisenhower's original Social Security application on the web, but of course, Eisenhower's application can be seen because he is deceased.
13. Again, Obama would probably find it much easier to have his Occidental College in California records and his Social Security application form released to the public than he would in having his Hawaii long form birth certificate released, but the President of the United States, Obama, has remained conspicuously silent when it comes to the release of these two items. Why is that?
14. I can only conclude that the President of the United States won't release his Occidental College in California records and his original Social Security application form---the one he supposedly filled out as a teenager in Hawaii---because he is trying to hide something that would be damaging to his political career.