Those who push to have the U.S. population be homogeneous fail or refuse to see that our strength comes from our diversity rather than diversity accounts for some ill-perceived weakness. When I see a "Make American Great" type, in person or on television, it strikes me that I am really seeing a "Make America White (Male) Again" type. I can then discount almost everything said or written as fantasy based on myth. It's hard to kill a myth, but it can be starved. The best way is to deny it money and accolades, which is what I have made my mission.
Homogeneous is inevitable as people lived together. People tend to inflitrate a society very slowly at times but eventually they will adopt the laws ,rules and practices of the society they live in. Jews and Moslems celebrate xmas, celebrate other holidays just as members of their community do. It can be painfully slow but it will happen as children grow up in the different society.