Answer:
Domestically, President Nixon was most concerned with strengthening federal power.
Explanation:
Regarding his internal policy, Richard Nixon began a slow but gradual dismantling of the tax laws implemented since the time of the administrations of Franklin Delano Roosevelt and John F. Kennedy. Under a political program called New Federalism, he allocated 30,000 million dollars to reactivate the economy of the states and the most important cities of the country, while he did not stop favoring the economic interests of the financial elites and large corporations.