which branch can call special sessions of congress
Special session In the United States of America, Article II, Section 3 of the United States Constitution gives the President of the United States the power to "on extraordinary occasions, convene both Houses or either of them." [1]
Section 13 of the Canadian Charter of Rights and Freedoms This section serves a similar purpose as the Fifth Amendment to the United States Constitution, but does not provide witnesses the same opportunity to excuse themselves from testifying.
Joint Session of Indian Parliament If the above conditions are satisfied, the President of India may summon joint sitting of both the houses of parliament.
Powers of the United States Congress 5. To coin money, regulate the value thereof, and of foreign coin, and fix the standard of weights and measures;
Casting vote While having the same right to vote as any member of the House, the Speaker of the United States House of Representatives, to maintain the appearance of impartiality, typically does not vote unless doing so would make a difference. This is, in effect, a casting vote.
United States Secret Service After the 1901 assassination of President William McKinley, Congress also directed the Secret Service to protect the President of the United States. Protection remains the other key mission of the United States Secret Service.