OP is onto something. George Washington in his farewell speech warned against a two party system because it divides the people and invites foreign influence.

George Washington on avoiding the 2 party system

“The alternate domination of one faction over another, sharpened by the spirit of revenge, natural to party dissensions, which in different ages and countries has perpetrated the most horrid enormities, is itself a frightful despotism. The disorders and miseries which result gradually incline the minds of men to seek security and repose in the absolute power of an individual; and sooner or later the chief of some prevailing faction, more able or more fortunate than his competitors, turns this disposition to the purposes of his own elevation, on the ruins of Public Liberty. Without looking forward to an extremity of this kind (which nevertheless ought not to be entirely out of sight), the common and continual mischiefs of the spirit of party are sufficient to make it the interest and duty of a wise people to discourage and restrain it. It serves always to distract the public councils, and enfeeble the public administration. It agitates the community with ill-founded jealousies and false alarms; kindles the animosity of one part against another; foments occasionally riot and insurrection. It opens the door to foreign influence and corruption, which find a facilitated access to government itself through the channels of party passions. Thus the policy and the will of one country are subjected to the policy and will of another. There is an opinion that parties in free countries are useful checks upon the administration of the government, and serve to keep alive the spirit of liberty. This, within certain limits, is probably true; and in governments of a monarchical cast patriotism may look with indulgence, if not with favour, upon the spirit of party: but, in those of the popular character, in governments purely elective, it is a spirit not to be encouraged. From their natural tendency it is certain there will always be enough of that spirit for every salutary purpose. And there being constant danger of excess, the effort ought to be, by force of public opinion, to mitigate and assuage it. A fire not to be quenched, it demands a uniform vigilance to prevent its bursting into a flame, lest, instead of warming, it should consume.”