Deregulation, for deregulation's sake alone is never a good thing. Regulations are created to remedy a crisis, removing regulations invites a return to crisis.
The deregulation of the banking industry with the repeal of the Democratic Glass(D)–Steagall(D) Banking Act (1932) thru the Republican Gramm(R)–Leach(R)–Bliley(R) Banking Act (1999) was clearly OVER SOLD! The repeal of Glass(D)–Steagall(D) Banking Act (1932) in less than 10 years formed the basis for the Financial crisis of 2007–2008.
Trump, admittedly is a FRAUD that likes to use big stacks of paper as evidence that he is or has been transparently doing big things. He does not know what he is doing. Abe Lincoln reportedly said it first - "You can fool all the people some of the time and some of people all of time, BUT YOU CAN'T FOOL ALL THE PEOPLE ALL THE TIME."
"That giant stack of paper Trump stood next to? A little too giant." - Washington Post - December 14, 2017
"Trump barred reporters from examining stacks of folders at press conference" The Hill - - January 11, 2017
"Trump's false claim that 'there's nothing to learn' from his tax returns" – New York Times - May 12, 2016
NBC News - POLITICS NEWS - May 3, 2019, 8:06 AM CDT - By Associated Press
The new safety changes were sought by the industry but fiercely challenged by environmentalists.