The Heritage Foundation’s advocacy arm will not say if it will heed House Democrats’ demand for a sit-down with its president, Kevin Roberts, about the conservative think tank’s Project 2025.A Heritage spokesman declined to comment to Fox News Digital on Wednesday when asked about the letter from nearly 40 House Democrats that read, “We write to invite you to meet with Members of Congress to discuss the Project 2025 Presidential Transition Project.”“The content within this transition plan will permanently damage federal administrative operations and have a direct impact on all our Districts,” reads the letter led by Reps. Jared Huffman, D‑Calif., and Ayanna Pressley, D‑Mass.“Our offices are increasingly hearing from constituents worried about the impact of Project 20 …