Fiscal conservatives are deficit hawks. They don’t want the federal budget to run a deficit. That’s what fiscal conservative has pretty much always meant.

Fiscal conservatives do not dominate the House Republican caucus. Fiscal conservatives appear to have virtually no influence with House Republicans. ~Jonathan Bernstein

This is true, but then that is what one would expect from the House GOP leadership that we have. The current House GOP leadership is filled entirely with people who endorsed the largest expansion of unfunded liabilities in over a generation The tax deal in December last year wasn’t that long ago. It was obvious that no one in any position of authority was terribly interested in fiscal conservatism and fiscal responsibility then, and that remains true now.