The phrase "fix a loophole" is correct and usable in written English.
You can use it when referring to an issue that requires a solution. For example: The legislature is working hard to fix a loophole in the current tax law.
McCain-Levin quite simply fixes a loophole in the tax code: Deductions for stock compensation in financial reports and on tax returns ought to be symmetrical.
One of the things we accomplished after our school shooting in 1992 was fixing a loophole in Massachusetts that allowed the perpetrator of our shooting to get his gun.
In February, the administration proposed fixing a tax loophole that has been exploited by oil and gas companies in order to provide breaks to domestic manufacturers.
He said bringing back the 50p tax rate would not fix a "system full of loopholes" which Labour left behind in 2010.
Closing this tax loophole would fix a fundamental flaw in our health care system.
"We fixed a lot of loopholes, and now we can fix the next one," she says.
As much as 40percentt of gun sales may be occurring through these private sales—a loophole that common sense and the vast majority of Americans demand we fix.
"If these governing bodies cannot get together to fix this loophole, if players stop using this wedge, which would stop the pressing of the issue, then I will relook at it and put the wedge back in play," Mickelson said.
"In three years, or maybe five years, they'll be back to fix these loopholes, because there will be a huge amount of fraud," Mr. Gillis forecast.
"If the politicians are serious about these projects getting off the ground, if they're serious about the jobs, they'll fix this legal loophole once and for all," Roche said.
