(POLITICO) Backed by some of his fiercest allies and with little left to lose politically, Donald Trump on Tuesday stepped up his attacks on House Speaker Paul Ryan and the GOP establishment that has suddenly and decisively turned its back on him.

“It is so nice that the shackles have been taken off me and I can now fight for America the way I want to,” Trump tweeted Tuesday morning, an indication that his already bruising presidential campaign would be shedding whatever gloves remained in the election’s final month.

Once reluctant partners with the shared mission of keeping Hillary Clinton out of the White House, Ryan and Trump are now public enemies, with the Manhattan billionaire accusing the House speaker on Twitter of being “very weak and ineffective.”

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