"An aura of inevitability is now forming around the controversial mogul," The Washington Post said after Trump, 69, was endorsed by two House Republican committee chairmen, Bill Shuster and Jeff Miller.

Indiana University basketball coach Bob Knight also threw his support behind Trump's presidential campaign, less than a week before Indiana voters go to the polls in the state's primary.

News reports said more rank-and-file Republicans are expected to follow suit, including longtime Republican lawmaker John Duncan.

After this Tuesday's primary elections, Trump is now way ahead of his other rivals in terms of delegate count and is about 250 delegates short of the magical figure of 1,237 delegates, which is necessary for him to be the party’s Presidential nominee.

According to The Wall Street Journal, more Republicans are slowly beginning to express support for him.

Trump's early congressional backers, who initially faced scorn for backing the businessman are finding themselves in a more comfortable position, it observed.

"You're not having to stick your neck out quite as far as a few months ago. It's less of a stretch now. People like to be with the winner," Congressman Duncan hunter told the journal.
    
He was one of the few GOP lawmakers to endorse Trump in March.
    
A day earlier, Senator Bob Corker Chairman of the Senate Foreign Relations Committee welcomed the foreign policy speech of Trump.

"Today, Donald Trump delivered a very good foreign policy speech in which he laid out his vision for American engagement in the world," he said in yet another indication of the changing views of the top party leadership.

"Two weeks ago, people were telling me about Donald Trump's issues or negatives. Now they're reaching out, I want to support him, I'm going to support him, help me understand...there's definitely a mood shift, an energy shift," Congressman Chris Collins said after a meeting between Republican lawmakers and Trump campaign official.

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