Obama’s was probably the least transparent administration in history till this one came along.
Nixon: Watergate, Agnew resigns to avoid prison, Nixon resigns to avoid impeachment...the Saturday night massacre.
Reagan: Hud Secretary Sam Pierce takes the 5th in an investigation into $5 billion in missing Hud funds. Deborah Dean went to prison. Iran Contra, North admits he destroyed evidence and smuggled documents out of the pentagon to hide the details of arms sent to Iran. Government money, in violation of the law, is sent to terrorists in Honduras fighting against the government of Nicaragua.
George HW Bush: Immunity for any and all participants in Iran/Contra.
Clinton: Aside from lying about sex....there are the bullshit allegations of all sorts of things...like the travelgate deal. Nothing there.
"W": Lied about WMD in Iraq. Lied about the plan to discredit Joe Wilson by outing his CIA agent wife.
Obama: The IRS stuff...nothing there. Benghazi...terrorist attack kills 4. Wrongdoing by Obama or Clinton? Nope. Wiretap on Page? Legal and authorized by a FISA court.
How you've decided Obama was less transparent is not all that obvious.