to ensure that any taxpayer whose return has been delayed or otherwise adversely affected due to tax-related identity theft has a single point of contact at the Internal Revenue Service throughout the processing of the taxpayer’s case. The single point of contact shall track the taxpayer’s case to completion and coordinate with other Internal Revenue Service employees to resolve case issues as quickly as possible. (b) Single point of contact (1) In general For purposes of subsection (a), the single point of contact shall consist of a team or subset of specially trained employees who— (A) have the ability to work across functions to resolve the issues involved in the taxpayer's case