Final answer:
The first step after a bill is introduced in the U.S. House of Representatives is that it is assigned to a committee for review, discussion, and potential amendments.
Step-by-step explanation:
When a bill is introduced in the U.S. House of Representatives, the first step is not an immediate vote, debate on the House floor, or a decision by the Speaker to consider the bill. Instead, the initial action taken is that the bill is assigned to a committee, which will look into it and recommend changes. This is the stage where a bill is thoroughly examined, and potential amendments are discussed. The committee can also decide to table the bill, essentially ending its progress, unless it is brought back up for a vote again at a later time.