But Trump's felt-tip marker wasn't exclusively reserved for paper — he once signed his $147-million border wall that replaced the old wall.
One of the platforms that Trump infamously campaigned on for his first presidential campaign was building a wall at the border, which eventually came to fruition — though not to completion — during his first administration.
In September 2019, he paid a visit to a border wall construction in Otay Mesa, a neighborhood in San Diego County, California. With a hefty price tag of $147 million, the 14-mile section of steel beams, concrete, and rebar replaced the construction of a decades-old wall that was previously installed in the 1990s.
"You can fry an egg on that wall," Trump told the reporters and officials gathered during his visit, referring to the wall's design to absorb heat.
And without fail, the president brought out a Sharpie to sign one of the slats of his beloved border wall, which he said was at the request of the border patrol agents at the site.
"I autographed one of the bollards," he said. "There are a lot of bollards. That's a lot of bollards."