Bill Weld, the Harvard-educated former MA governor whose name appeared next to presidential candidate Gary Johnson's on the Libertarian ticket in 2016, officially announced on Monday that he is going to challenge President Donald Trump for the Republican nomination in 2020.
In a statement, Weld said: "Ours is a nation built on courage, resilience, and independence".
"It is time to return to the principles of Lincoln - equality, dignity, and opportunity for all", he added.
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With little in the way of organization or outside money, and at odds with a majority of GOP voters who solidly support Trump, Weld's longshot campaign will target disaffected Republicans and independents who share his disdain for the president and embrace libertarian values of small government, free trade and free markets, and personal freedom.
Ex-Florida Governor Jeb Bush, who was bested by Mr Trump during the 2016 election, has recently been calling for a Republican to oust the president next year.
Weld, 73, who was the running mate to failed Libertarian presidential candidate Gary Johnson in 2016, served as the Republican governor of MA between 1991 and 1997, unsuccessfully challenged Democratic Sen.
Weld's nomination by President Bill Clinton to be USA ambassador to Mexico touched off a bitter public spat with then-Sen. He served two terms as MA governor in the 1990s. The 73-year-old described himself to Jake Tapper as a Republican "who works across the aisle and gets things done". Donald Trump is not an economic conservative.
And, while Weld sees blame on both sides of the aisle for the divisiveness coming from Washington, he said Trump is the "grand master" of the problem.
Weld also slammed Trump's attitude toward climate change and his confrontational style toward the press.
"I've never seen such bitterness in this country", he said.