Marianne Wright was halfway through a conference call on Jan. 21 when she received a startling message from her son.

Two women were on their property and were demanding her son open a gate so that they could go see “illegals crossing on rafts.” The women, Wright later claimed in an affidavit, said they were a congressional candidate and a Secret Service agent.

“Immediately, we knew what that was about,” Wright told The Daily Beast on Thursday. “It was an echo and reiteration of the lies Steve Bannon’s ‘We Build The Wall’ campaign published and promoted against us for years.”

Wright is the executive director of the National Butterfly Center, a private nature preserve in Texas’s Rio Grande Valley. The center is a sanctuary for hundreds of butterfly species—and a frequent target for conspiracy theorists after Wright and her colleagues opposed the Trump administration’s plans to build a border wall through the middle of the property.

But after last week’s bizarre confrontation with longshot congressional candidate Kimberly Lowe, the National Butterfly Center is closing its doors from Jan. 28 through Jan. 30, in order to avoid a far-right conference that promises to take supporters (including Lowe) on a field trip to the border.