While aides cited “diplomatic” reasons for postponing the trip, the New York Times reported that White House engineers are trying to manage the workload for the 79-year-old president. Combining the two trips would have involved 10 days on the road which, according to the paper, was deemed unnecessarily taxing. Biden has said he plans to run in 2024, health permitting, meaning he would be 86 at the end of his second term. Inevitably, Mr. Biden’s opponents have repeatedly sought to exploit the president’s gaffes and stop the march, and much was made of it when he fell off his bike while cycling in Delaware a few weeks ago. But the president’s supporters say he was still capable of an extended bike ride, citing that as evidence of his fitness, along with his daily workouts with a trainer. But as the Telegraph reported last month, there is growing concern among Democrats, who have been alarmed by the prospect of an aging president and worry the party could lose the White House if he is nominated.