In what way does the executive branch check the powers of the legislative branch?

The executive branch can check the powers of the legislative branch by seeking to block or prevent legislative action on certain bills or pieces of legislation. The major power a President has is the ability to use the veto to outrightly reject proposed legislation. The executive branch can also use other measures such as signing statements, executive orders, and other measures to influence and check the power of the legislature. 

On april 20, 1814, the dethroned emperor left france for the isle of  elba, where he was exiled under the terms of the treaty of fontainebleau.napoleon  would be allowed to ruleelba, which had 12,000 inhabitants. perhaps cruelly, the treaty allowed him to retain the title "emperor."