The president and vice president of the Heritage Foundation are both resigning, they announced on Monday. Kay James, the president, will stay on for up to six months until a replacement is found. After that, she’ll become a distinguished visiting fellow at the foundation, which promotes conservative ideas. Kim Holmes, the executive vice president, will step down on April 16. “When we came on board as the executive leadership team three years ago, we set several goals and told Heritage’s board of trustees that we would serve for three to five years to see them through,” James said in a statement. “We accomplished everything we set out to do. Now it’s time to let someone else take the reins.” The foundation said James during her time as president “pushed the organization to new heights,” noting that one of her passions was having the organization reach out and share its message …