WASHINGTON, D.C. (AP) — President Donald Trump faces the challenge of convincing Republican senators, global investors, voters and even Elon Musk that he won’t bury the federal government in debt with his multitrillion-dollar tax-break package.

Financial markets have remained skeptical, as the deficit continues to grow despite Trump’s promises to curb spending. Sen.

Ron Johnson, a Wisconsin Republican, said he’d spoken with Trump recently about the bill after his promise that at least four senators were willing to hold the bill unless steeper cuts to the deficit were made.