While I still disagree with Macron's statement on Sunday, after mulling it over I understand it better. It was still designed as a direct insult to Trump and America. Trump did attend a memorial service to commemorate the dead, but he did not attend both of them. I wonder if the Macron insult, which followed an earlier insult, was the reason.
For a European, nationalism is bound up in which ethnic group you belong to. There is German nationalism, French nationalism, and it is linked to those ethnic groups. One reason for the hard time that the EU is giving Hungary's refusal to allow immigration is that that form of nationalism is against the "European Values" that the EU is trying to foster. But there is no Europe, as a country, right now. Nationalism fights against a future European unity. In a sense, the EU is trying to make the motto of the United States, E pluribus unum, as its unofficial motto, out of many one. To the European mindset, at least the ones that want a Europe as a country, is that nationalism is a form of ethnic pride. It can be, but does not have to be.
In US history we had considerable reluctance to accept Caucasians from European countries that were not English. You can google for signs that say, "No Irish Need Apply." This is inconceivable today. The "No blacks" part of the sign I chose is unfortunately conceivable. Italians were looked down upon, the fact that they might have a white tone to their skin did not matter. The Know Nothing Party is a good example of this:
The Native American Party, renamed the American Party in 1855 and commonly known as the Know Nothing movement, was an American nativist political party that operated nationally in the mid-1850s. It was primarily anti-Catholic, xenophobic, and hostile to immigration, starting originally as a secret society. The movement briefly emerged as a major political party in the form of the American Party. Adherents to the movement were to reply "I know nothing" when asked about its specifics by outsiders, thus providing the group with its common name.
They were the Alex Joneses of the 19th century.
As I said, this is inconceivable today.
Does Trump consider himself German because his grandfather was born in Germany? Does Trump consider himself a Scot since his mother was born there? He does not, because out of many (countries) one (country) is formed. (I can picture Trump trolling his adversaries in a kilt.)
My own family history also indicates this. In 1699 My ancestor Jean De Jarnette arrived in Virginia as an immigrant. He was 19. He married Mary Mumford and had a family. His grandson, James De Jarnette, served as a Major General in the war of 1812. Did James consider himself French? He did not.
I recently did an ancestry.com test. It showed pretty much what I expected. An English cluster, and a Northwest French cluster. While Jean left La Rochelle, his ancestry was more Normandy than French. But what was surprising was that the second largest nationality in my background was Swedish. Do I regard myself as Swedish, or English or French? I do not. I am American, because out of many one is formed.
In other words, the nationalism that Trump advocates is Civic Nationalism:
Civic nationalism, also known as liberal nationalism, is a form of nationalism identified by political philosophers who believe in an inclusive form of nationalism that adheres with traditional liberal values of freedom, tolerance, equality, and individual rights.[1][2]
Civic nationalists often defend the value of national identity by saying that individuals need a national identity in order to lead meaningful, autonomous lives[3] and that democratic polities need national identity in order to function properly.[4] Civic nationalism is frequently contrasted with ethnic nationalism.
Trump is not advocating a nationalism based on an ethnic group, being both "German" and "Scottish" which would he pick? He is proposing a nation based on shared values. This is quite different.
Charles De Gaulle, the founder of the current French republic that Macron has the privilege to serve as president had this to say in 1913:
He who does not love his mother more than other mothers and his country more than other countries, loves neither his mother nor his country.
Sounds right to me.