US President Donald Trump and his wife, first lady Melania Trump, attend the "Salute to Our Armed Forces" inaugural ball during inauguration festivities in Washington, US, January 20, 2017. [Photo/Agencies]

President Donald Trump's first weekend in office was dominated by sparring with the media and marches on Saturday in which hundreds of thousands of women across the country demonstrated against the new president.

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The White House vows to fight the news media "tooth and nail" over what officials see as unfair attacks on President Donald Trump, setting a tone that could ratchet up a traditionally adversarial relationship to a new level of rancor.