Experts on historic preservation are raising concerns over the feasibility of President Donald Trump’s plans to complete large-scale renovations to the White House.

The White House will undergo its most significant expansion in over a century with the construction of a new 90,000-square-foot ballroom.

President Donald Trump held plenty of meetings at the White House this summer: with foreign delegations striking trade deals, Cabinet members plotting a government overhaul and industry executives seeking tariff relief.