What is needed for a robust and growing economy is stability. When the USG keeps meddling, no one can implement a 5 or 10 year plan with any hope of it paying off. Constant government interference discourages investment and hiring.
The US has plenty of innovative, hard working people. Stop throwing banana peels in front of them every six months and astonishing things will happen. New technologies will appear, new industries will be born, important problems will be solved, employment will rise, and the country will flourish.
But it won't happen because politicians won't be able to take credit.