If Trump's presidency was to be ranked now, where would he be?

[The Mikado]

Nothing Trump has done yet has quite the same consequences as:

Expelling thousands upon thousands of Native Americans from their land in direct violation of a Supreme Court ruling, condemning many of them to their deaths on the walk to Oklahoma. (Thank you, President Jackson!)
Launching an insane landgrab war to try to steal a third of Mexico under false pretenses and false accusations of Mexican aggression. (Thank you, President Polk!)
Signing the Compromise of 1850, allowing southern slavehunters to drag escaped slaves back south into lifelong bondage and servitude. (Thank you, President Fillmore!)
The Kansas Nebraska Act, abolishing the Missouri Compromise Line and allowing slavery to exist in any territory that wanted it. (Thank you, President Pierce!)
Allowing seven states to secede from the Union with complete inaction and leaving it as a problem for his successor. (Thank you, President Buchanan!)
Trying to undermine Reconstruction and sabotaging Congress' efforts to grant rights to freedmen. (Thank you, President Johnson!)
The sheer scope of felonious and unethical activity the Harding Administration managed to get through in 2 and a half years (Trump's gunning for Harding's record, no doubt).
Inaction and apathy in the face of the gravest and greatest economic disaster in human history. (Herbert Hoover)
Launching an illegal war in Cambodia without Congressional approval or even knowledge that ended up leading to the deaths of literally millions of people. (Thank you, Richard Nixon!)
Illegally running guns to the Iranian revolutionary government to pay for illegally funding Nicaraguan death squads directly counter to Congress. (Thank you, Ronald Reagan!)
Launching a brutal war under false pretenses that destabilizes the Middle East to this day, a war of which we are still dealing with the consequences. (Thank you, George W. Bush!)

Let's keep some perspective here when we say that Trump is the worst, OK?

[The Mikado]

Please....he would be in last.

He can't be behind Buchanan, surely? I mean our country is nowhere near disintegrating.

It depends. Yes our country was in a monumentally worse place when Buchanan left office. But wasn't the country heading there anyway? Did Buchanan cause the war, or was he just too incompetent to stop us from going to war? I'm not saying that if after four years of trump he should necessarily be considered worse than Buchanan. But so far, from day one to day 100 to now, I don't think any president has made more of a cluster**** of every single move he has made. He has been a total embarrassment, a total failure, and hasn't given one positive thing to this country.

Plus I believe Nixon would be ranked as the worst president, if it weren't for the fact that he was a pretty good president minus Watergate. But if you have absolutely nothing positive to hang your hat on, a scandal like Watergate is so overwhelmingly bad, that it probably makes you the worst. And we might be heading there with how this presidency is going.

Causing a mess right out of the gate and being a screwup for the rest of the term? Look at John Tyler or Andrew Johnson.

[The Mikado]

Nothing Trump has done yet has quite the same consequences as:

Expelling thousands upon thousands of Native Americans from their land in direct violation of a Supreme Court ruling, condemning many of them to their deaths on the walk to Oklahoma. (Thank you, President Jackson!)
Launching an insane landgrab war to try to steal a third of Mexico under false pretenses and false accusations of Mexican aggression. (Thank you, President Polk!)
Signing the Compromise of 1850, allowing southern slavehunters to drag escaped slaves back south into lifelong bondage and servitude. (Thank you, President Fillmore!)
The Kansas Nebraska Act, abolishing the Missouri Compromise Line and allowing slavery to exist in any territory that wanted it. (Thank you, President Pierce!)
Allowing seven states to secede from the Union with complete inaction and leaving it as a problem for his successor. (Thank you, President Buchanan!)
Trying to undermine Reconstruction and sabotaging Congress' efforts to grant rights to freedmen. (Thank you, President Johnson!)
The sheer scope of felonious and unethical activity the Harding Administration managed to get through in 2 and a half years (Trump's gunning for Harding's record, no doubt).
Inaction and apathy in the face of the gravest and greatest economic disaster in human history. (Herbert Hoover)
Launching an illegal war in Cambodia without Congressional approval or even knowledge that ended up leading to the deaths of literally millions of people. (Thank you, Richard Nixon!)
Illegally running guns to the Iranian revolutionary government to pay for illegally funding Nicaraguan death squads directly counter to Congress. (Thank you, Ronald Reagan!)
Launching a brutal war under false pretenses that destabilizes the Middle East to this day, a war of which we are still dealing with the consequences. (Thank you, George W. Bush!)

Let's keep some perspective here when we say that Trump is the worst, OK?

You literally did not mention the interment of an entire race of people, or the dozens upon dozens of horrible, horrible things Lyndon Johnson did.

I also didn't mention Wounded Knee, Grover Cleveland breaking up the Pullman Strike at gunpoint resulting in dozens of deaths, or the US literally occupying the Dominican Republic for 8 years to force them to spend their budget on paying back their debts to the US at gunpoint. That list could be as long as you want it to be.

My main point was that most of Donald Trump's mistakes haven't killed people yet (yet being the key word), so how could he be at the bottom of the list?

[The Mikado]

I fail to see how he ranks below Andrew Johnson on any criteria. Policy objectives? Congress stripped him of authority and took over his signature issue. Power? Johnson failed to even fire one of his own Secretaries because Congress passed the Tenute of Offices Act that prohibited firing a Secretary without Congressional approval. Johnson's term was an unmitigated disaster for the Democratic Party and the nation as a whole and effectively castrated executive power for a generation.