President Trump's decision to announce theat 8 p.m. on a Friday as menacing was about to make landfall in Texas did not go unnoticed.
Arpaio, convicted of criminal contempt of court for violating a federal court order to stop profiling Latinos in Arizona, was controversial enough, but the White House announcement drew bipartisan criticism. The news came two hours before Harvey made landfall as a Category 4 hurricane along the Texas coastline. Arpaio is seen as a political ally of the president, and they share similar views on immigration.
Sen. Richard Blumenthal, D-Connecticut, said Mr. Trump issued the pardon, "Under cover of hurricane and Friday night darkness."
Senate Minority Leader Chuck Schumer, D-New York, said the president appeared to be using Harvey as a cover to pardon Arpaio.
Rep. Frank Pallone, D-New Jersey, pointed out that Mr. Trump has pardoned a convicted sheriff before selecting an administrator for the National Oceanic and Atmospheric Administration (NOAA), with Harvey pelting the Texas coastline.
Others criticized Mr. Trump for issuing the pardon at all.
Doug Andres, a spokesman for Speaker of the House Paul Ryan, R-Wisconsin, told the Wall Street Journal Ryan does not agree with the pardon.
Arizona's senators were particularly vocal among Republicans. In a statement, Sen. John McCain, R-Arizona, said the pardon, "undermines his claim for the respect of rule of law, as Mr. Arpaio has shown no remorse for his actions."
"No one is above the law and the individuals entrusted with the privilege of being sworn law officers should always seek to be beyond reproach in their commitment to fairly enforcing the laws they swore to uphold," McCain said. "Mr. Arpaio was found guilty of criminal contempt for continuing to illegally profile Latinos living in Arizona based on their perceived immigration status in violation of a judge's orders. The president has the authority to make this pardon, but doing so at this time undermines his claim for the respect of rule of law as Mr. Arpaio has shown no remorse for his actions."
Sen. Jeff Flake, R-Arizona, said he would have preferred the judicial process to play out, instead of the president intervening.
Another Republican, Rep. Justin Amash of Michigan, said the president pardoned someone who violated people's constitutional rights.
Democrats also criticized the president's use of the pardon at all. Sen. Bob Casey, D-Pennsylvania, called the decision "wrong" and an abuse of the pardon process.
Sen. Chris Murphy, D-Connecticut didn't mince words, saying the pardon was a "middle finger" to America.
For days, the White House had declined to say if or when the sheriff would be pardoned.
Mr. Trump had hinted at a possible pardon for Arpaio at a combative,.
"Do the people in this room like Sheriff Joe?" the president said to a cheering crowd.
"So was Sheriff Joe convicted for doing his job?" the president said, gauging his audience's support for a pardon. "You know what, I'll make a prediction: I think he's going to be just fine, OK? But I won't do it tonight because I don't want to cause any controversy. But Sheriff Joe should feel good."
Arpaio's pardon wasn't the only news the White House released on Friday as Hurricane Harvey approached.
, a security adviser to the president, left the White House on Friday, and the president signed a memo to the Pentagon outlining his controversial in the military.