You can lead a horse to water, but you cannot make him drink. Marxists and Political Islam (Sharia law is the centrality) exclude all others from any legitimacy whatsoever, and eschew the American Union as illegitimate. Islam has been at war with the world perpetually since the 600s, and recently with the entire West, including, ultimately its Marxist elements. These entities are not American, nor can they be according to your comments regarding propositions and beliefs. Lincoln did not conceive of Marxism or Islamic contest, although he was aware of our early conflict with Islam from the beginning. Islam is micromanaged forced submission, slavery with no escape and close doctrirnal similarities with Western originated socialist ‘isms’ (and actual ties with Nazism during and after WWII). These are the only serious enemies of the civilizational miracle realized by the efforts of the American founders and later, Lincoln himself, and, they are at publicly declared war with us. Welcoming Sharia banking, other Sharia practice and Marxism into American culture is a big mistake, and can undo what was wrought so artfully in the past. I do not sense a strong Lincolnesque defense of the union, the American Union from either of our political parties. I hear free trade, globalism, irrelevance of nation-states, rumors of North American expandable Unions, redefinition of marriage, dissolution of property (Kelo)..etc. Where is a new Lincoln? Where is a Lincoln to defend the Union today? Lincoln would have protected the nation from Trojan horses. I think Lincoln would not welcome and treat with respect Marxism and Political Islam as the West is actually doing, while mildly objecting to the terrorist jihadist functions of Islam. We have not yet decided to really go to war against Islam even as it declares itself openly against the West.
The Gettysburg Address is a wonderful reaffirmation of the idea of America, and it welcomes all who can agree with what it means, represents. In the war we are in now, first a recognition and identification of the enemy must be clearly defined, and the Gettysburg address must be remembered and brought to the fore. Who will do it and protect the nation from those who would enslave it? It is forgotten and little taught that the Confederacy believed any skin color could be enslaved...the Union fought so white and yellow and red skinned peoples, themselves, would not be enslaved as most commonly, blacks were. Islamic slavery, still practiced today, although officially outlawed in Saudi Arabia, is the essence of Sharia law...and, it is quietly taught in the over 1200 mosques in the US, 900 of them Saudi funded....its slavery recognizes all skin colors as fair game also. Why do we welcome this? I do not think the founders and Lincoln would have welcomed Marxism and Islam. They are quite un-American and inconsistent with freedom.