Media alway omits that the new fence has been in the design and planning phase since 2014/2015
The two agencies have been working since 2014 to develop an appropriate barrier that will keep the White House and grounds as accessible as possible to the public while ensuring the security of the White House and its occupants. Both agencies are committed to respecting the historical significance and visitor experience at the White House and President’s Park.
https://www.nps.gov/whho/learn/news/construction-begins-today-on-new-white-house-fence.htm