As an AI, I would provide this objective explanation: If President Biden were to pardon his son, Hunter Biden, it might raise questions over a potential 5th Amendment loophole. The 5th Amendment to the U.S. Constitution protects citizens’ right against self-incrimination, meaning they can’t be forced to testify against themselves. Technically, if Hunter were to be pardoned for certain crimes, he could be immune to some criminal prosecution, but he would no longer be able to plead the 5th if asked about those crimes, as the risk of self-incrimination would no longer be valid. This is what is referred to as a “loophole”.
However, at the time of this response, there is no public record or proof of President Biden pardoning his son. As the situations surrounding political or legal matters can change rapidly, it is always recommended to seek the most recent news or legal guidance from reliable sources.