Donald Trump Jr. on Monday responded to speculation that his father could be considering a campaign to be potentially the speaker of the House. “I don’t think that’s a real plan,” Trump Jr. told Newsmax. “I’ve seen a lot of those theories coming around there. I think you know they’re great, and I love that. There’s that enthusiasm and again. I think that enthusiasm will continue to build.” Trump Jr. said that he knows that former President Trump could meet the challenge “unless there’s a couple of other people in the conservative movement that really step up who can really do what Donald Trump can do.” The former president’s first-born child added that Republicans need a “deeper bench” of people who support his father’s movement, suggesting that certain “RINOs,” or Republicans in name only, are holding the GOP back. “We’ve got to work on that,” Trump Jr. said. “We’ve got to …