It's not unusual for 0-gen or 1st gen immigrants to be conservative (at least culturally and fiscally). The Republican party to their detriment has not taken advantage of this reality --being too busy fighting for somewhat edge cases or constituencies (conservative religion and corp interests) to the detriment of growing their base. Not that dems have not been guilty of the same mistakes (catering to edge constituencies like the progs and corp interests, just differently).

If the Republicans could find a candidate who better reached out to conservative minorities while not alienating their present constituencies they certainly would prove a strong contender, specially if the Democrats veer further to the Progressive agenda. Trump's problem was while he appealed to more minorities than most past Republicans he did not market it well and didn't put it front and center enough and also turned off the so called 'soccer moms' with his poor approach to the pandemic.