By Nandita Bose, Andrew Mills and Akash Sriram DOHA/WASHINGTON (Reuters) -Elon Musk, who spent nearly $300 million to back Donald Trump's presidential campaign and other Republicans last year, said on Tuesday he will cut his political spending substantially,

Musk, the richest person in the world, said Tuesday that he would be spending less on political campaigns.

Musk was the biggest donor in last year’s election cycle, contributing $291 million to groups supporting President Donald Trump or other Republican candidates, according to data from watchdog OpenSec...