I see people posit that from time to time. Yet many/most 'native Latinos' align with LaRaza, MEChA, the Hispanic Caucus etc.
Indeed. It is much like the folks that keep telling us the Jews have finally had enough of liberal/Democrat weakness in regards to Israel and are on the verge of voting Republican. It never happens. Jews blind allegiance to Democrats is worse than ever.
Latino's are solidly in the Democrat camp - and this trend is only accelerating. We are losing the demographic war and we either need to find a way to appeal to Hispanics in a completely different and more effective way (without promises of amnesty or "comprehensive" immigration reform), or we need to continue winning ever greater shares of the white vote.