TikTok is planning to sue the Trump administration as soon as Tuesday after President Trump signed order banning the service from the United States. It will be filed in the U.S. District Court for the Southern District of California, where TikTok’s American operations are based.The lawsuit will argue that President Trump’s action is unconstitutional because it failed to give the company a chance to respond. The White House defended the president’s executive order. “The Administration is committed to protecting the American people from all cyber related threats to critical infrastructure, public health and safety, and our economic and national security,” spokesman Judd Deere said. TikTok is popular among teenagers in the U.S., where more than 100 million users have downloaded the app. TikTok’s more than 1,000 U.S.-based employees could have their paychecks indefinitely frozen. Trump’s order could make it impossible for American lawyers to represent TikTok in any U.S. legal proceedings. “We are shocked by the recent Executive Order, which was issued without any due process,” TikTok said in a statement. After the 45-day period, doing business with TikTok could result in a $300,000 fine per violation and “willful” offenders could even face criminal prosecution. If Congress believes the president has used the emergency economic powers unjustly, lawmakers can overrule the order by passing a resolution that would terminate the order, but probably this will not happen.