Rep. Chip Roy (R-Texas) on Friday warned that the growing national debt is “a ticking time bomb” and he called on his fellow lawmakers to do “much more.” The U.S. national debt crossed 100 percent of gross domestic product (GDP) at the end of the first quarter, the first time the debt crossed that line since 1946. The debt surpassed $39 trillion in March, a mere five months after it reached $38 trillion. Roy told Fox Business’s Cheryl Casone that the debt is “a ticking time bomb and that some of us have been talking about for a long time.” “Now, thankfully, we’ve taken some strides over the last couple of years to do something about it,” he said. “[With] the Big Beautiful Bill , we had some pretty significant cuts to some mandatory spending.…