WASHINGTON -- Anight about the in the U.S. reverberated from the White House to Capitol Hill.
The fallout from the investigation has many speaking out.
says he's horrified that a bill everyone approved -- the Ensuring Patient Access and Effective Drug Enforcement Act of 2016 -- .
"They made it and camouflaged it so well all of us were fooled. All of us. Nobody knew!" Sen. Manchin said. "There's no oversight now ... that bill has to be retracted ... has to be repealed."
The law sailed through the Senate last spring. It had the backing of the Department of Justice (DOJ) and was sponsored by members of both parties, so nobody in Congress thought to question it.
Sen. Claire McCaskill, D-Missouri, introduced a bill Monday to repeal last year's law.
"It's not unusual for something like this to roll through without much fanfare," she said of the bill that passed.
McCaskill told CBS News that it's realistic her bill could pass.
"I think that it's realistic. I do sense that there is a bipartisan kind of 'we've got a crisis' attitude about opioids now," she said.
One of the bill's authors, Rep. Marsha Blackburn, R-Tennessee, said via a spokesperson Monday that "if there are any unintended consequences from this bipartisan legislation … they should be addressed immediately."
But, including the $177,000 in donations he got from the drug industry while he was pushing it through.
"Heavens no. My campaigns run about $10 million dollars. And frankly I don't know who contributes to it at all," he said Monday.
He also said that "the Drug Enforcement Agency (DEA) has all the enforcement power it needs."
Some Democrats are urging President Trump to drop his nomination of the bill's chief author,, to be the nation's drug czar.
"It's like putting the fox in charge of the hen house," Sen. Chuck Schumer, D-New York, said.
Many lawmakers are still trying to figure out why DEA and the DOJ dropped their initial opposition to the bill. That would have ensured more scrutiny before a vote, and it's a sign that even some in law enforcement may not have realized how much this law would tie the DEA's hands.