### Clue: Don't allow backing for Trump's extremes to overshadow right's regular following (7)
### Answer: PREVENT 
 ### Explanation: Definition: Don't allow
 **Reversal of**(backing for) **the 1st and last letters of**(…'s extremes) "Trump" **containing**(to overshadow) [ R(abbrev. for "right") **plus**(… following) EVEN(regular;unvarying) ].