a) a fence in the South
b) housing blocks for other distressed people... and then...
...also take in about 1 Million refugees from Syria, but only real families (aged father, wife and kids), or just women and children. (keep out the 18 to 35 year old men, they might be most likely jihadists...)... You could also force Saudi Arabia, Bahrain, UAE to take in up to 5 Million refugees... How? Saudi Arabia has 100'000 tents in the dessert, which are air-conditioned and only used once year for a pilgrimage of male pilgrims. These tents are empty, full of luxury and would house 3 Million people. The Saudis are mainly Sunnis... and the refugees are mainly Sunnis... so it would be a match. How can you force Saudi Arabia? Tell them you stop buying their oil!
WHY, you may ask Mr. President? The USA, Israel, UK and NATO caused this shit in the first place so freakin' deal with it!!!!
While you're ad it... legalize the Mexicans by giving them a 5 year TEMPORARY work permit (open work permit), they can have SS#, drivers license, pay taxes and start being integrated. After 5 years they get for 5 years a green card and after 10 years of being good residents they can get a passport. Start a real immigration program for future immigrants by adapting the same immigration rules as Australia and/or Canada. Then give all other immigrants (yes, there are the ones that are not from Mexico), like the ones on L1, L2, H1B, B1, B2, E1, E2 and I-Visa immediately a green card for 5 years and then they can apply for citizenship.
Also, kill Obamacare and bring a real Universal Health Care like Canada, UK or Cuba.
Then also increase the minimum wage for everybody to $15.50. Make sure that sugar, agriculture, service companies all pay that minimum. (not like Wal-Mart or McD who pay around $2/hr...)... anyway... make sure the minimum wage is forced down large corporations evil throat. What about the 27 Million small businesses? They get real tax breaks and if need the minimum wage is subsidized through earning of large corporations and all companies that outsource their work to India and China. If these companies don't obey fine them for slavery.
Who is going to pay for this crazy plan you may ask? O.K... first you close all tax loop holes for all companies that are US companies. You do business in the US, you are a US company then your headquarter needs to move back from the Caymans, Switzerland and other tax heavens. These companies, will now pay 10% of your NET income in taxes. In other words the Fortune 500 make earnings of around 840 Billion a year... there is still much taxes to be collected... And a real immigration plan could generate 2 Billion in fees, $1 Billion in taxes, Top 200 companies could fork up another 100 Billion, the top 500 another 80 Billion, pull out of all wars or cut them down to 50% would make another 500 Billion... You see... it would make about 1 Trillion in income, Universal Health Care (the right way) would cost 450 Billion, building a wall about 11 Billion, taking care of all veterans around 1.8 Billion... you do the math, you still have money left over, perhaps, dear future President... you might want to throw some serious money into education. Make college education free, pay off all student debts of everyone. And you might want to bring back industries from China by giving them interesting deals...
Can it be done? Yes, it can be done. A fact is that many other countries are doing it successfully for decades... One last thing... stop GMO and the theft of water by corporations like Nestle... invest 250 Billion in converting all of America over to natural energy resources like wind, sun, water, waste... and...before I forget, election spending are at a maximum of 10 Million per candidate... and all lobbying in congress is outlawed.