WATCH: Conservative lawmakers explain opposition to GOP healthcare bill

Three conservative lawmakers on Wednesday joined a growing list of Republicans coming out against the House GOP's current healthcare bill.

GOP Reps. Louie Gohmert (Texas), Walter Jones (N.C.) and Steve King (Iowa) told The Hill's Molly K. Hooper that they wouldn't vote for a proposal introduced Monday by their leadership team.

"I do not know how any Republican conservative, which I am one of those, can vote for the bill when you don't know what the cost is going to be," Jones said in an interview.

But Rep. Dennis Ross (R-Fla.), a defender of the leadership measure, argued that the bill to repeal and replace ObamaCare is just a starting point.

"This process starts off with the ball moving from the five, 10, 20-yard line, and moving down the line. It’s never the perfect product when it’s filed," Ross told The Hill.

Gohmert and King insisted that the bill will require a lot of massaging before it is palatable for conservatives.

For his part, Rep. Mo Brooks (R-Ala.) wants the House to consider full repeal of ObamaCare.

"That’s what we tried to do in the past, that’s what we ought to try to do in future ... the states are better situated to handle this healthcare issue than is the federal government," Brooks said in an interview.

Watch the video above to hear the lawmakers in their own words.