third rail

US /ˌθɜːrd ˈreɪl/
UK /ˌθɜːrd ˈreɪl/
"third rail" picture
1.

قضية خطيرة, قضية حساسة

a political issue that is so controversial that any politician who dares to broach the topic will suffer a backlash from voters

:
Healthcare reform has become a third rail issue in American politics.
أصبح إصلاح الرعاية الصحية قضية خطيرة في السياسة الأمريكية.
No politician wants to touch the third rail of social security.
لا يرغب أي سياسي في لمس القضية الخطيرة للضمان الاجتماعي.