An immediate temporary halt to all legal immigration with the intent of "rebooting" the system
Deportation of non-productive illegal immigatints en masse and a road to citizenship for illegal immigrants who have successfully integrated into their communities (literate in English, reasonably acculturated, productive or filling a worthy economic niche.)
An explicit and strong preference for people with immediate historical, racial, and ethnic ties to the immediate U.S. population; such ties to determine preference - not merely notional citizenship or passports, i.e. French citizens of Middle Eastern nationality considered as citizens of their country of origin; more or less free immigation for people with close cultural ties (the UK, Anglosphere and some former colonies including some but not all citizens of former colonies, again to be determined by cultural/ethnic ties), Western and Eastern Europeans with varying quotas depending on cultural and economic factors.)
Very limited immigration for 1st generation family ties or marriage with individuals with U.S. citizenship, individuals of foreign origin who are essential to the running of international corporations now nationalized, or by special individual permit on individual grounds granted by a court appointed for that purpose. Refugees to be taken in on a limited basis, not granted citizenship, and provided with accomodations on federal land in the United States, and the opportunity to earn American citizenship by various routes (military service, being vouched for by an employer, etc.) but contingent upon acculturation. English proficiency required.
Immediate cessation of a "special relationship" with Israel. Deportation of persons with dual Israeli passports or at least removal and complete exclusion from high corporate or government office and the executive (not solely or merely creative) parts of the media. Investigation into and charges of high treason for all such persons who have been found to have misused their power in favor of the Jewish State. Encouragement of non-integrated Jewish communities to emigrate to Israel. Many more will probably emigrate if these measures are put in place. The Jews being a special case, but also similar measures for certain other foreign nationals, especially Chinese, depending on level of connection to the Chinese government and industry, who are involved in American government or industry and especially holders of dual passports.
Full equal rights for native-born Americans of African descent and indigenous people in all aspects but no special treatment of any kind. No "affirmative action" or preferences whatsoever. In government civil service settings where affirmative action has lead to non-Whites becoming a vast minority, rearrangement of civil service systems in the short term to ameliorate the problem.
Full elimination of federal interference in state matters concerning race, even allowance of "separate and equal," but literally equal in terms of resources provided, etc. type provisions of separation provided that separate and unequal (interpreted literally) type accommodations be subject to lawsuits in federal court.