```\n    if(outstandingisoUSD >= TENTH_OF_CENT){ //ignore leftover debts less than $0.001\n        uint256 collateralLeft = collateralPosted[_collateralAddress][msg.sender] - _collateralToUser;\n        uint256 colInUSD = priceCollateralToUSD(currencyKey, collateralLeft); \n        uint256 borrowMargin = (outstandingisoUSD * minOpeningMargin) / LOAN_SCALE;\n        require(colInUSD > borrowMargin , "Remaining debt fails to meet minimum margin!");\n    }\n```\n