Order the construction of ten rank I ships and recall the Senate fleet. If the Senate fleet does not turn over, they are to be immediately destroyed by Terra's own fleet.
Have the Terran military arrest any representatives who do not comply. Mars is asked to abide by that decision; should it not, it is to be placed under orbital blockade, but not bombarded.
"It would seem we have made a profound mistake in trusting those representatives to safeguard the well-being of humanity. Whatever their merits be, it is clear those are no statesmen, but mere popular idols, unfit to rule a country, even less so lead the vanguard of mankind's future. With those best interests of our species and, particularly, Terra, for Terra is all but our home, and home still to most of mankind, in mind, I am forced to dissolve this Senate and institute martial law, grieve me as it may"
"As Terra's Senator and sole controller of its military, soldiers, I order you to arrest any of the former Senators who do not abide by this new resolution. Those who abide will be reinstated once this legislative body is deemed fit to resume its activities, meanwhile, another emergency government will take place. You shall be allowed to stand at this chamber, but shall do so under restrictions until then"
"Governor of Mars, due to the nature of your position, your situation is different. Governorships will not be revoked, and you will maintain control of Mars, as long as you too abide by this new resolution, otherwise, the due measures will have to be taken"
Dissolve the Senate. Instate a provisory autocracy with autonomous governorships.