House Minority Leader Nancy Pelosi said Tuesday there is nothing she would trade for President Donald Trump’s border wall, setting a hard negotiating stance in advance of an expected December showdown over the issue.

“It happens to be like a manhood issue for the president, building a wall, and I’m not interested in that,” the California Democrat said during a discussion at the Harvard Kennedy School’s Institute of Politics.

Pelosi emphasized Democrats do support border security but they would prefer to look at strengthening existing security measures as part of a comprehensive overhaul of immigration laws.

“We can’t allow him to say we’re not interested in protecting the border,” Pelosi said of Trump’s frequent attack on Democrats for their refusal to support the wall. “That isn’t the only way to protect the border. In fact, it’s probably the worst way to protect the border.”

Trump is itching for a fight over border wall funding, and GOP leaders who convinced him to defer that battle until after the midterm election have said they’re prepared to push for the wall in December appropriations negotiations.