My impression of Trump, even before he ran for President, was that he had made a commitment to Christianity after meeting and talking with Pastor Paula White several years ago. If that is true, then his extra marital activity, if true, most likely took place before that. We know, from reports, that Melania is a devout Christian with a very strong faith. Dr. Jeffress is exactly right about why Evangelicals support the President. The left is directly opposed to Christian values in almost everything. Most of them seem not to even believe in God.
If you know the Bible, you know that the great King David was certainly no saint.