Is there national/ethnic discrimination against Asians in U.S. graduate school admissions and in university faculty hiring tl;dr: please skip to the last paragraph.

I am currently an international undergrad at an US university, studying math. I am currently thinking of going to graduate school and becoming a university professor after that.

My dad thinks that there must be some unforeseen and implicit racial/ethnic/national discrimination against Asians in U.S. higher learning and that I must therefore invariably be more studious in learning.

However, today's America is more diverse than ever, every university have non-discrimination policy, and collge faculty hirers are in general (I think, at least) educated people. Also, based on my interactions, no one in my college seems to be biased against racial minorities/different nationalities. So I am thinking that there wouldn't be much national/racial discrimination on graduate school admissions and in university faculty hiring, especially as my major is math, which is one of the objective academic discipline. I also plan to do a career with pure math and not on industrial/applied math.

I am perfectly fluent in English and can communicate perfectly like a native except for a almost non-existent accent. I am also very aquainted with American culture.

Of course, I know that there still must be some implicit national/racial diacrimination in job hiring process in non-academic sectors (e.g. companies/restaurants) despite there being laws against it. But since universities are places were nondiscrimination is highly encouraged and there are lots of international scholars, I think my dad's claim is highly exaggerated.

I believe that my current status as a citizen of South Korea, which is a close ally with U.S., shouldn't negatively affect my image in graduate school admission/university faculty job hiring.

I found some articles like this one but I think this is an exception to a general rule.

Long story short:

Is there national/racial discrimination against Asians in graduate school admissions and in university faculty hiring/promotion in math (and/or Physical Sciences in general)? I am asking for anything in the United States (i.e., no answer needed for other countries). "Discrimination" for scholarship doesn't count,  -- nor does undergraduate admissions!!! I am looking specifically for an answer about math department or physical sciences. A general perception is a preferred answer rather than specific instances, though that too is good. Answers are wlecome from those working in the admission/hiring process. Also, lack of communication skills frequently attributed to international scholars doesn't count as racial/national discrimination in my question.

EDIT: In reply to the replies below, I am well aware that any sort of unjust racial/national discrimination is prohibited whatsoever in the U.S., and I am well aware that the mainstream media and the general consensus of the people is that any sort of unjust discrimination is absolutely bad. I've attended an American high school and watched tons of American news and TV. However, I am merely asking a professional view (that is not speculative, i.e. someone who's been working in the area for many years) to what extent some people's implicit biases against Asians seems to negatively impact grad admission/prof hiring. Of course, having been in U.S. I know that no one would say "we're gonna hire this white guy over this equally qualified Asian guy just because of race." Also, being in U.S. for many years do not always count as state residency, as I am not a permanent resident.
There is quite a bit of academic research on university entry and race, mostly in US universities, so if you are interested in learning about racial discrimination in academia, this would be a good place to start.  The phenomenon of discrimination against Asians in academia is well-known and has been identified regularly over the past twenty to thirty years, both in academic literature (e.g., Tsuang 1989, Wu 1995, Wong and Halgin 2011, Kim et al 2011) and in the press (see e.g., The Economist 2015).  The Asian-American Coalition for Education claim that there is widespread discrimination against Asians in academia, particularly in the elite Ivy-league schools, and they provide references to a number of articles and books discussing this issue.

This issue has been studied in quite a bit of detail by the economist Thomas Sowell in the context of his research on affirmative action (an overview of his ideas on the subject is here and his recent book on the economics and politics of race is here).  Sowell argues that affirmative action leads to discrimination against Asian applicants, as a consequence of this group having a higher proportion of applicants with high grades/skills.  Since Asians are the "model minority", Sowell argues that the use of affirmative action in academia tends to involve a raising of the bar for entry for this group, in order to try to avoid their "overrepresentation".

Anyway, this is a big subject, and a lot has been written on it.  Some users on this site may be able to give their own anecdotal experiences, but I recommend you examine this broader literature.  The links I have provided will get you started, but there is also plenty more on the topic.

UPDATE: There is presently a major lawsuit against Harvard University for alleged discrimination against Asian applicants.  It is alleged that Harvard admission staff have systematically down-rated Asian applicants on their "personality" in order to achieve racial balancing, consistent with the university's goal of racial diversity.  @BlueRoses: If this is a topic that interests you, I cannot think of a better example than for you to watch how this legal case plays out.