The phrase "main impediment" means the biggest obstacle or barrier that stands in the way of achieving a goal or making progress.
Sentences with «main impediment»
The main impediment, from Cuba's point of view, is its listing by the U.S. as a state sponsor of terrorism. (bloomberg.com)
If uncertainty is the main impediment to investment decisions, then it should subside over time as economies heal, improving the investment climate. (bankofcanada.ca)
At that time, Lader was clearly in favor of a complete liberalization of abortion laws, and he repeatedly suggested throughout the book that the main impediment to such a liberalization was the power of the «Roman Catholic hierarchy.» (religion-online.org)