An act of Congress, signed by the President, would be needed to change the number of seats in the House of Representatives.
The number of seats is temporarily increases whenever a new state joins the Union, but the number goes back to 435 at the time of the following reallocation.
Only the House of Representatives can do this.
To date, James K. Polk the United States 11th President is the only one to have served as Speaker of the House of Representatives.
No. The number of the house of representatives can only be changed by a law enacted by congress.
House of Representatives
James A. Garfield
He was the President. He was also the only US President to be elected to the House of Representatives after his term as President.
Only the House of Representatives is empowered to impeach the president. Then it is the job of the Senate to try him/her.
James K. Polk was only House speaker who became US President. Polk was house speaker several years before he was elected President. (Gerald Ford was the minority leader of the House when he was appointed vice-president. He then became President when President Nixon resigned his office. )
The US House of Representatives has the sole power of impeachment in the case of the President and other federal office holders. Impeachment is the equivalent of an indictment and can be voted only by the US House of Representatives. If the House votes to impeach a president, then a trial is held in the Senate and 2/3 majority is required to conviction and and removal from office.
Nobody received votes for President from more than half of the appointed electors. Whenever that happens, the House of Representatives elects the President. That happened only once so far, in 1824, but the same rules are still in place.
The House of Representatives has sole authority to bring Articles of Impeachment (like a grand jury indictment) against the President and other government officials. If the House votes in favor of impeachment, the case proceeds to trial in the Senate. No one can be removed from office by impeachment (the first step in the process) alone.
John Quincy Adams