The Hastert Rule, also known as the ''majority of the majority'' rule, is an informal governing principle used in the United States by Republican Speakers of the House of Representatives since the mid-1990s to maintain their speakerships and limit the power of the minority party to bring bills up for a vote on the floor of the House. Under the doctrine, the Speaker will not allow a floor vote on a bill unless a majority of the majority party supports the bill.
Answer this question, making sure that the answer is supposed by the text: can the speaker of the house block a bill?
yes