USA Today's editorial board blasted President Donald Trump on Tuesday in a scathing response to his controversial tweet about Democratic U.S. Sen. Kirsten Gillibrand of New York.

What You Need To Know: Kirsten Gillibrand

Trump's Tuesday morning tweet, which accused Gillibrand of "begging" him for campaign contributions and said she "would do anything for them," was widely criticized as being sexually suggestive. His post came after Gillibrand called for his resignation amid sexual misconduct allegations.

>> See the tweet here

White House Press Secretary Sarah Huckabee Sanders denied claims that Trump's tweet was sexist and said those who read it as suggestive had their minds "in the gutter."

USA Today's editorial board disagreed.

"With his latest tweet, clearly implying that a United States senator would trade sexual favors for campaign cash, President Trump has shown he is not fit for office," the editorial board wrote. "Rock bottom is no impediment for a president who can always find room for a new low."

The editorial added that Trump "is not fit to clean the toilets in the Barack Obama Presidential Library or to shine the shoes of George W. Bush."

"This isn’t about the policy differences we have with all presidents or our disappointment in some of their decisions," the piece continued. "Obama and Bush both failed in many ways. They broke promises and told untruths, but the basic decency of each man was never in doubt."

The editorial described Trump as "uniquely awful" and blasted him for what it called "sickening behavior."

"The nation doesn’t seek nor expect perfect presidents, and some have certainly been deeply flawed," the piece concluded. "But a president who shows such disrespect for the truth, for ethics, for the basic duties of the job and for decency toward others fails at the very essence of what has always made America great."