Why Donald Trump's Social Security promise could be hard to keep

(NewsNation) — Donald Trump vowed to end taxes on Social Security retirement benefits on the campaign trail, but as he heads into his second term that promise could be hard to keep."You would have to have bipartisan buy-in to do that and it's hard for me to imagine that happening," said Charles Blahous, a senior research strategist at the Mercatus Center at George Mason University who specializes in Social Security.Today, individuals who earn above $25,000 pay income tax on