(CNN) -- President Donald Trump voiced displeasure Tuesday at a border security deal struck by congressional negotiators, hinting it may not meet his requirements for constructing a wall. "Am I happy? The answer is no, I'm not. I'm not happy," Trump said when questioned about the agreement during a meeting of his Cabinet at the White House. He said he was still studying the details of the agreement. But he stopped short of saying he would reject the accord, which Democrats and Republicans announced late Monday. Instead, he suggested he had other mechanisms ready to deploy to satisfy his need for border wall funding. "I'm adding things to it," Trump said.