Joe Scarborough's "Amnesty Don" song. Is this what caused Trump to double down with his anti-immigrant rhetoric during his speech last night?

Courtesy of Salon: 

“Morning Joe” namesake Joe Scarborough on Wednesday put out a song called “Amnesty Don” mocking GOP presidential nominee Donald Trump. The song makes light of Trump’s self-described “softening” on his primary promise to deport 11 million illegal immigrants. 

The song and accompanying lyric video — on Scarborough’s Facebook page — conveniently dropped just hours before Trump is scheduled to meet with Mexico’s President Enrique Peña Nieto in Mexico City. And on Wednesday evening, Trump will further define his immigration policy during a rally in Phoenix.

Okay so like the article says this song started to make the rounds on the internet yesterday morning and continued throughout the day.

It is conceivable that Trump, who was on his way to Mexico earlier may not have heard it until after he met with President Nieto.

Which makes one wonder if THAT might not have triggered Trump into going full KKK rally last night in Arizona.

That is really not such a crazy theory considering how aggressive his Twitter war has been with Scarborough in the past.

Some day, when things calm down, I'll tell the real story of @JoeNBC and his very insecure long-time girlfriend, @morningmika. Two clowns!

— Donald J. Trump (@realDonaldTrump) August 22, 2016

And if that is true, perhaps it also underlines how easy it is to manipulate Donald Trump and make him your bitch.

Something of which I imagine Vladimir Putin is all too aware.

Joe Scarborough gives Donald Trump a brutal nickname. And it's sticking.

So after that segment Twitter ran with it.

#AmnestyDon is the #1 trending topic on Twitter right now. pic.twitter.com/hLWyXvNNsj

— Morning Joe (@Morning_Joe) August 29, 2016

"elsewhere" -- She went to the White House, #AmnestyDon https://t.co/QGSCW6V6cj

— Ron Fournier (@ron_fournier) August 29, 2016

Here's what #AmnestyDon is offering for his lunch special today. Many people are saying that its price is softening pic.twitter.com/XwvCdVYVBU

— Jim Butler (@JimBUWDawg) August 29, 2016

Angry #amnestydon is looking for his cell phone to tweet. @realDonaldTrump 's Babysitter, @KellyannePolls hid it. pic.twitter.com/ZcTXudybH7

— T◇Horses (@southerntalker) August 29, 2016

And yes there are many, many other quite imaginative tweets which can be found at #AmnestyDon.

I hate to give Scarborough too much credit, because you know I just don't like him, but giving Trump a nickname like this is pretty brilliant.

Especially since you know he will have to respond. 

If we impeach Presidents for using executive privilege to alter immigration laws, then how did these avoid a similar fate?

Courtesy of Pensito Review: 

Pres. Dwight Eisenhower: 

1956 

By executive order, circumvented immigration quotas to allow 900 orphans to join their adoptive families in the U.S. 

1956-1958 

By executive order, allowed 31,000 Hungarian anti-Soviet insurgents to emigrate. 

1959-72 

By executive order, allowed 600,000 Cubans fleeing Castro to emigrate. 

Pres. Gerald Ford: 

1975 

By executive order, allowed 360,000 refugees, mostly from from Vietnam, to emigrate. 

1976 

By executive order, allowed 14,000 Lebanese nationals to emigrate. 

Pres. Ronald Reagan: 

1981 

By executive order, allowed 7,000 Polish anti-Communists to emigrate. 

1982 

Allowed 15,000-plus Ethiopians to emigrate. 

1987 

By executive order, rescinded deportation of 200,000 Nicaraguans. 

1987 

By executive order, deferred deportation of undocumented children of 100,000 families. 

George H.W. Bush: 

1989 

By executive order, deferred deportations of Chinese students. 

1989 

By executive order, reversed visa denials of 7,000 Soviets, Indochinese. 

1990 

By executive order, deferred deporations of previously amnestied citizens’ 1.5 million spouses and children. 

1991 

By executive order, deferred deportation of 2,000 Gulf War evacuees. 

1992 

By executive order, deferred deportations of 190,000 El Salvadorans. 

George W. Bush: 

2002 

By executive order, expedited naturalization for green-card holders who joined military. 

2005 

By executive order, deferred deportation of students affected by Hurricane Katrina. 

2006 

By executive order, enabled 1,500 Cuban physicians to seek asylum at US embassies. 

2007 

By executive order, deferred deportation of 3,600 Liberians.

Strange but I remember hearing nothing about impeachment, or the threat of impeachment, concerning any of these "amnesties." 

Is it just the fact that they are Republicans that protects from conservative anger at their "shredding of the Constitution?"  Or is there another differnce that I just can't quite put my finger on right now that sets President Barack Obama apart from his predecessors?