It's not terribly suprising that Romans might have visited Texas, or other places in the New World. I can imagine that of the million of Roman ships that travelled over their empire, a few would have gotten lost and possibly wound up in the New World. I highly doubt that such voyages would have been anything more than one-way trips.
Given the tremendous amount of documentation we have from the Romans, if there were active trade routes or bilateral contacts between Rome and the New World, we'd know about them.
I highly doubt that such voyages would have been anything more than one-way trips.
Any return trip for the Romans would have required knowledge of the Gulf Stream current. The later European sailors learned of it from fishing in the North Atlantic and the Grand Banks.
Columbus and his crews were fortunate in having ships far more advanced than the Roman galleys. Their carracks carried far more sail area and could carry enough fresh water and food for the return voyage - made against the Atlantic currents.