Allah Tala says in the Quran:
وَاِلٰى عَادٍ اَخَاهُمۡ هُوۡدًا ؕ قَالَ يٰقَوۡمِ اعۡبُدُوا اللّٰهَ مَا لَـكُمۡ مِّنۡ اِلٰهٍ غَيۡرُهٗ ؕ اِنۡ اَنۡتُمۡ اِلَّا مُفۡتَرُوۡنَ
(11:50) And to 'Ad We sent their brother Hud. He said: 'My people! Serve Allah: you have no god save Him. (In attributing partners to Allah) you have merely been fabricating lies.
وَاِلٰى ثَمُوۡدَ اَخَاهُمۡ صٰلِحًاۘ قَالَ يٰقَوۡمِ اعۡبُدُوا اللّٰهَ مَا لَـكُمۡ مِّنۡ اِلٰهٍ غَيۡرُهٗ ؕ هُوَ اَنۡشَاَكُمۡ مِّنَ الۡاَرۡضِ وَاسۡتَعۡمَرَكُمۡ فِيۡهَا فَاسۡتَغۡفِرُوۡهُ ثُمَّ تُوۡبُوۡۤا اِلَيۡهِ ؕ اِنَّ رَبِّىۡ قَرِيۡبٌ مُّجِيۡبٌ
(11:61) And to Thamud We sent their brother Sali'h. He said: 'My people! Serve Allah; you have no god other than Him. He brought you into being out of the earth, and has made you dwell in it. So ask Him to forgive you, and do turn towards Him in repentance. Indeed My Lord is near, responsive to prayers .
In these verses, Prophets Hud and Saleh are mentioned as brothers of their nations. It is not said that Allah sent them as men (Rajuluhum) of their nations, but Akhahum. Thus, for example, the first verse did not say "Wa ila 'adin rajuluhum Hud."
In Arabia, being a brother (AKH) of a tribe or a nation meant a lot. It meant that he is their well-wisher, cares about them, will help them, guard their lives, honor and property and that he is even willing to give his life for the protection of his tribe or nation.
Speaking about Prophet Muhammad (s.a.a.w.), Allah T’ala says:
“And We sent you not, but as a Rahmah (love, compassion and mercy) for all creatures.” (21:107)
Akhouwa (brotherhood) of a Muslim extends to all mankind.
These prophets' Akhouwa as mentioned in the above verses, was towards their non-Muslim nations.
No new prophets are going to come. Risalah (giving of the message) of Islam is now in the hands of Muslims.
Be a brother or sister of your nation, the country of your citizenship, as were the Prophets of Allah!
First generation Muslims in the USA need to overcome their national identity crisis. The nation of your children and generations to come is the USA and so should be yours.
So, regardless of where you are born, as American Muslim, be a brother or sister of America, as were the prophets of Allah.
Show your care and well-being to every American, just as the Prophets did. Learn the message of Rahmah of Islam and spread it out.