Whenever
the Vice President
and a majority
of either
the principal officers
of the executive departments,
or of such other body
as Congress
may by law provide,
transmit
to the President pro tempore
of the Senate
and the Speaker
of the House of Representatives
their written declaration
that the President
is unable
to discharge
the powers and duties
of his office,
the Vice President
shall immediately assume
the powers and duties
of the office
as Acting President.
Thereafter,
when the President
transmits
to the President pro tempore
of the Senate
and the Speaker
of the House of Representatives
his written declaration
that no inability exists,
he shall resume
the powers and duties
of his office
unless the Vice President
and a majority
of either
the principal officers
of the executive department,
or of such other body
as Congress
may by law provide,
transmit
within four days
to the President pro tempore
of the Senate
and the Speaker
of the House of Representatives
their written declaration
that the President
is unable
to discharge
the powers and duties
of his office.
Thereupon
Congress
shall decide
the issue,
assembling
within forty eight hours
for that purpose
if not in session.
If the Congress,
within twenty one days
after receipt
of the latter written declaration,
or,
if Congress
is not in session,
within twenty one days
after Congress
is required
to assemble,
determines
by two-thirds vote
of both Houses
that the President
is unable
to discharge
the powers and duties
of his office,
the Vice President
shall continue
to discharge the same
as Acting President;
otherwise,
the President
shall resume
the powers and duties
of his office.